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. 2018 May 22;(6):e25295. doi: 10.3897/BDJ.6.e25295

Checklist of Sphagnum-dwelling testate amoebae in Bulgaria

Nikola Bankov 1, Milcho Todorov 1,, Anna Ganeva 1
PMCID: PMC5974006  PMID: 29861653

Abstract Abstract

Background

Until now, a complete checklist of Sphagnum-dwelling testate amoebae in Bulgaria has never been published. Records for species diversity and distribution in the country were scattered in many faunistic and ecological publications. The aim of the present study is to summarise all data for the species distribution at the level of country by reviewing the existing literature and by additional data obtained in our research over the past two years.

New information

The checklist comprises 171 species, classified into 43 genera, 20 families, three orders, three classes and three phyla. We present data for 16 new Sphagnum-dwelling testate amoebae in Bulgaria and new distribution data for 134 species. Of them, 99 species are recorded from Stara Planina Mt., for which there was no available data to date. Additionally are recorded 69 new species for Pirin Mt., 21 for Vitosha Mt. and 18 for Rila Mt. Thirty six species are synonymised according to the latest taxonomic changes. Two misidentified taxa (Euglypha brachiata Penard, 1902 and Difflugia compressa var. africana Gauthier-Lièvre et Thomas, 1958) are transferred into valid species E. acanthophora and Zivkovicia compressa, respectively. Three of the recorded species have not been included in the checklist, because they are currently not refering to testate amoebae (Cochliopodium bilimbosum (Auerbach 1856) and Cochliopodium echinatum Korotneef, 1879 are gymnamoebae (naked amoebae) and Microgromia elegantula (Penard 1904) = Paralieberkuehnia elegantula (Penard 1904) is freshwater foraminifera).

Keywords: Amoebozoa , Cercozoa , Stramenopiles, biodiversity, distribution, Sphagnum mosses, Bulgaria

Introduction

Testate amoebae are a polyphyletic assemblage of at least three major, unrelated taxonomic groups of eukaryotes (Adl SM et al. 2012). They are present in most terrestrial and freshwater environments and more marginally in brackish and marine habitats. They are especially abundant and diverse in Sphagnum mosses. Research on testate amoebae have increased significantly over the past two decades due to their increasing use in different applied aspects: as a bioindicators for palaeoecological studies, in environmental monitoring, pollution hazards, ecotoxicology, studies on their role in the cycling of elements in terrestrial ecosystems, biogeographical and evolutionary studiesetc. (Aoki, Yoshiyuki et al. 2007, Booth 2002, Charman 2001, Charman et al. 1998, Lamentowicz and Mitchell 2005, Mitchell et al. 2008, Nguyen-Viet et al. 2007, Swindles et al. 2008, Swindles et al. 2015, Qin et al. 2013).

Studies on Sphagnum-dwelling testate amoebae in Bulgaria started at the beginning of the 20th century, when Pateff (1924), Pateff (1928) published his works on freshwater Rhizopoda in the country. He recorded a total of 118 rhizopods, of which 52 testate amoebae were from Sphagnum mosses in the Rila, Rhodopes and Vitosha Mountains. Later, Valkanov (1932), Valkanov (1934) published results of his studies on the fauna of alpine lakes in the Rila and Pirin Mountains and recorded many testate amoebae, which are typical inhabitants of peat mosses. Unfortunately, they were recorded along with all other species and no distinction was made amongst the species found in the lakes themselves and in the Sphagnum mosses from the lake shore. In the 60s and 70s of the 20th century, several publications on testate amoebae from the Vitosha, Rhodopes and Pirin Mountains were published (Golemansky 1965, Golemansky 1966, Golemansky 1968, Golemansky 1974), including a lot of data on Sphagnum-dwelling testate amoebae. At the end of the 20th and beginning of the 21th century, the number of publications concerning various aspects of taxonomy, systematics, morphology and ecology of sphagnicolous testate amoebae in Bulgaria increased considerably (Golemansky and Todorov 1990, Golemansky and Todorov 1993, Golemansky and Todorov 2006, Golemansky and Todorov 1985, Golemansky et al. 2006, Heger et al. 2010, Kosakyan et al. 2012, Todorov 1993, Todorov 2004, Todorov 2005, Todorov 2010, Todorov and Golemansky 1995, Todorov and Golemansky 2000, Todorov et al. 2010, Todorov et al. 2009). All data in the above-mentioned publications have never been summarised in one place and that is the reason why the main goal of the present paper is to unite this scattered information and, together with the new data obtained from our research over the past two years, to present a checklist of all known to date Sphagnum-dwelling testate amoebae in Bulgaria. Data on the distribution, habitats, regions, localities, altitude, authors and sources of information are provided in Suppl. material 1. Some typical and a few rare sphagnicolous testate amoebae, recorded from the country, are illustrated in Figs 1, 2, 3, 4.

Characteristic Sphagnum-dwelling testate amoebae from the order Arcellinida.

Figure 1a.

Figure 1a.

Arcella intermedia (Deflandre) (Arcellidae)

Figure 1b.

Figure 1b.

Hyalosphenia papilio (Leidy) (Hyalospheniidae)

Figure 1c.

Figure 1c.

Gibbocarina galeata (Penard) (Hyalospheniidae)

Figure 1d.

Figure 1d.

Padaungiella lageniformis (Penard) (Hyalospheniidae)

Figure 1e.

Figure 1e.

Quadrulella longicollis Taranek (Hyalospheniidae)

Figure 1f.

Figure 1f.

Quadrulella symmetrica (Wallich) (Hyalospheniidae)

Characteristic Sphagnum-dwelling testate amoebae from the order Arcellinida.

Figure 2a.

Figure 2a.

Lagenodifflugia bryophila (Penard) (Difflugiidae)

Figure 2b.

Figure 2b.

Zivkovicia compressa (Carter) (Difflugiidae)

Figure 2c.

Figure 2c.

Heleopera rosea Penard (Incertae sedis Arcellinida)

Figure 2d.

Figure 2d.

Heleopera petricola Leidy (Incertae sedis Arcellinida)

Figure 2e.

Figure 2e.

Lesquereusia spiralis (Ehrenberg) (Incertae sedis Arcellinida)

Figure 2f.

Figure 2f.

Lesquereusia epistomium Penard (Incertae sedis Arcellinida)

Characteristic Sphagnum-dwelling testate amoebae from the order Euglyphida.

Figure 3a.

Figure 3a.

Euglypha tuberculata Dujardin (Euglyphidae)

Figure 3b.

Figure 3b.

Assulina seminulum (Ehrenberg) (Assulinidae)

Figure 3c.

Figure 3c.

Sphenoderia fissirostris Penard (Sphenoderiidae)

Figure 3d.

Figure 3d.

Sphenoderia lenta Schlumberger (Sphenoderiidae)

Figure 3e.

Figure 3e.

Cyphoderia major (Penard) (Cyphoderiidae)

Figure 3f.

Figure 3f.

Campascus minutus Penard (Cyphoderiidae)

Rare or incidentally occurring testate amoebae in Sphagum mosses.

Figure 4a.

Figure 4a.

Arcella dentata Ehrenberg (Arcellidae)

Figure 4b.

Figure 4b.

Netzelia tuberculata (Wallich) (Netzeliidae)

Figure 4c.

Figure 4c.

Difflugia acuminata Ehrenberg (Difflugiidae)

Figure 4d.

Figure 4d.

Trigonopyxis arcula (Leidy) (Trigonopyxidae)

Figure 4e.

Figure 4e.

Bullinularia indica (Penard) (Plagiopyxidae)

Figure 4f.

Figure 4f.

Awerintzewia cyclostoma (Penard) (Incertae sedis Arcellinida)

Materials and methods

The data presented in the checklist are based primarily on published information concerning Sphagnum-dwelling testate amoebae in Bulgaria. In addition, data from our research conducted over the past two years are also included. We have tried to explore the diversity and distribution of testate amoebae in the main areas of the country where peat mosses are more widespread. Genus Sphagnum in Bulgaria numbers 27 species (Natcheva and Ganeva 2005) distributed in mires in mountain areas of the country above the tree belt or in mires in coniferous forest, these being an important component of habitat 91D0 (Bog Woodland) of Directive 92/43/EEC. Some of the species (e.g. Sphagnum capillifolium (Ehrh.) Hedw., S. subsecundum Nees, S. girgensohnii Russ., S. centrale C.E.O.Jensen, S. platyphyllum (Lindb. ex. Braithw.) Sull. ex Warnst., S. squarrosum Crome, S. teres (Schimp.) Ängstr.) are more widespread in mires of Western Stara Planina, Rhodopes, Vitosha, Rila and Pirin Mountains, where, with other bryophytes and sedges, they comprise the specific mire flora.

The material for the present study was extracted from wet Sphagnum mosses, gathered at Vitosha and Western Stara Planina Mountains in 2016 and Rila and Pirin Mountains in 2017. A total of 109 samples from 18 localities were sampled and examined. All data, concerning sampling localities including date, region, altitude, coordinates, Sphagnum moss species, as well as many physical and chemical parameters of the sampling sites, are provided in Suppl. material 2.

Testate amoebae were extracted from fresh Sphagnum mosses at the sampling site and concentrated by sieving (350 μm). The resulting fraction (50 ml) was observed with an optical microscope “Amplival” (Zeiss-Jena) using 40x objective and 10x ocular lens. For scanning electron microscopy (SEM), specimens were isolated by searching through small isolates of material in a petri dish. Specimens were extracted using a glass micropipette, washed several times in distilled water and then individual shells were positioned with a single-hair brush on a previously mounted double-sided adhesive tape on a standard aluminium stub and air-dried. The shells were coated evenly with gold in a vacuum coating unit. The photomicrographs were obtained using a JEOL JSM-5510, operating at 10 kV.

The checklist is annotated with information regarding the synonymous names (if available), species distribution in Sphagnum mosses in Bulgaria, the relevant literature sources and notes (mainly taxonomic). The higher classification used here follows Adl SM et al. 2012 and Meisterfeld (2002a), Meisterfeld (2002b). Taxonomic revision of some genera and families, as well as numerous taxonomic and nomenclature changes, based on recent molecular studies and subsequent phylogenetic reconstructions, have also been taken into account (Blandenier et al. 2017, Chatelain et al. 2013, Gomaa et al. 2013, Gomaa et al. 2017, Heger et al. 2010, Kosakyan et al. 2016a, Kosakyan et al. 2012, Kosakyan et al. 2016b, Lahr et al. 2013, Lara et al. 2007, Mazei and Warren 2012, Mazei and Warren 2014, Mazei and Warren 2015).

The list does not include separate varieties and forms recorded from Bulgaria, despite the fact that, according to the International Code of Zoological Nomenclature, article 45.6.3, when the name was published before 1961 using the abbreviation ‘var.’ or ‘f.’, it is deemed to be subspecific rather than infrasubspecific. However, due to the fact that many of these taxa have not sufficiently detailed descriptions, which in many cases are based on signs that do not have much taxonomic significance (small differences in size, the presence or absence of spines/horns and their number, the number of lobes of the aperture etc.), these taxa remain with unclear taxonomic status. So, until the clarifying of their status with the help of combined morphological and molecular approaches and full confirmation of their validity, we prefere to adopt a conservative position and consider these taxa as the product of the phenotipic plasticity of nominal species. Nevertheless, in ‘Notes’ to each nominal species, we have included all the records for these infrasubspecific taxa, in the event that some of them may be raised in rank in the future.

Checklists

Checklist of Sphagnum-dwelling testate amoebae in Bulgaria

Protozoa

Owen,1858

Neozoa

Cavalier-Smith, 1993

Amoebozoa

Lühe, 1913, emend. Cavalier-Smith, 1998

Lobosa

Carpenter, 1861, emend. Cavalier-Smith, 2009

Tubulinea

Smirnov et al., 2005

Arcellinida

Kent, 1880

Arcellina

Haeckel, 1894

Microcoryciidae

de Saedeler, 1934

Microcorycia

Cockerell, 1911

Microcorycia flava

(Greeff, 1866), emend. Penard, 1902

  • Amphizonella flava Greeff, 1866

  • Corycia flava Greeff, 1866

  • Microcorycia flava CoryciaDujardini? Gagliardi, 1871 (in part)

Distribution

Rhodopes Mt. (Golemansky et al. 2006).

Microchlamyidae

Ogden, 1985

Microchlamys

Cockerell, 1911

Microchlamys patella

(Claparede and Lachmann, 1859) Cockerell, 1911

  • Pseudochlamys patella Claparede and Lachmann, 1859

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Arcellidae

Ehrenberg, 1843

Arcella

Ehrenberg, 1832

Arcella arenaria

Greeff, 1866

  • Arcella aureola Maggi, 1883

  • Arcella microstoma Penard, 1890

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, new data).

Arcella bathystoma

Deflandre, 1928

Distribution

Rila Mt. (new data).

Arcella catinus

Penard, 1890

  • Arcella vulgaris Leidy, 1879 (in part)

  • Arcella artocrea Penard, 1902

  • Arcella vulgaris var. compressa Cash, 1905

  • Arcella catinus var. australis Playfair, 1918

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1928, Golemansky 1965, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Arcella dentata

Ehrenberg, 1830

  • Arcella stellaris Perty, 1852

  • Arcella Perty, 1852

  • Arcella stellata Ehrenberg, 1854

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006).

Arcella discoides

Ehrenberg, 1871

  • Arcella discoidea Ehrenberg, 1843

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

Besides the nominal species, two infrasubspecific taxa have also been recorded: Arcella discoides var. pseudovulgaris Deflandre, 1928 (Vitosha Mt.) and Arcella discoides var. scutelliformis Playfair, 1918 (Pirin Mt., Rhodopes Mt., Rila Mt.).

Arcella gibbosa

Penard, 1890

Distribution

Rhodopes Mt. (Golemansky et al. 2006); Vitosha Mt. (Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Arcella hemisphaerica

Perty, 1852

  • Arcella vulgaris var. hemisphaerica Wailes, 1918

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Todorov 2004, new data); Vitosha Mt. (new data).

Notes

The species has been recorded both as nominal species and as infrasubspecific taxon Arcella hemisphaerica f. undulata Deflandre, 1928 (Rhodopes Mt., Rila Mt.).

Arcella intermedia

(Deflandre, 1928) Tsyganov and Mazei, 2006

  • Arcella hemisphaerica var. intermedia f. undulata Deflandre, 1928

Distribution

Pirin Mt. (new data); Rila Mt. (new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Arcella rotundata

Playfair, 1918

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

Besides the nominal species, two infrasubspecific taxa have also been recorded: Arcella rotundata var. stenostoma Deflandre, 1928 (Vitosha Mt.) and Arcella rotundata var. stenostoma f. undulata Deflandre, 1928 (Rhodopes Mt., Vitosha Mt.).

Arcella vulgaris

Ehrenberg, 1830

Distribution

Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000); Vitosha Mt. (Golemansky and Todorov 1985,Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as infrasubspecific taxon Arcella vulgaris f. undulata Deflandre, 1928 (Rila Mt.).

Netzeliidae

Kosakyan, Lara, Gomaa and Lahr, 2016

Netzelia

Ogden, 1979

Netzelia tuberculata

(Wallich, 1864) Netzel, 1983

  • Difflugia proteiformis subsp. globularis var. tuberculata Wallich, 1864

  • Difflugia tuberculata Archer, 1867

  • Difflugia lobostoma Leidy, 1879 (in part)

  • Nebela tuberculata Owen and Jones, 1976

  • Difflugia tricuspis Medioli and Scott, 1983 (in part)

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Todorov 2004).

Notes

The species has been recorded both as nominal species and as synonym D. tuberculata (Rhodopes Mt.).

Difflugina

Meisterfeld, 2002

Difflugiidae

Wallich, 1864

Difflugia

Leclerc, 1815

Difflugia acuminata

Ehrenberg, 1838

  • Difflugia curvicaulis Penard, 1899

  • Difflugia acuminata var. umbilicata Penard, 1902

  • Difflugia venusta Ogden, 1983

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Vitosha Mt. (Pateff 1924, new data).

Notes

The species has been recorded both as nominal species and as synonym D. venusta (Rhodopes Mt.).

Difflugia ampullula

Playfair, 1918

Distribution

Pirin Mt. (new data); Rila Mt. (Todorov 2005, new data); Vitosha Mt. (new data).

Difflugia angulostoma

Gauthier-Lièvre and Thomas, 1958

Distribution

Rila Mt. (Todorov and Golemansky 2000); Stara Planina Mt. (new data).

Difflugia bacillariarum

Perty, 1849

  • Difflugia bicornis Penard, 1890

  • Difflugia australis var. minor Gauthier-Lièvre et Thomas, 1958

Distribution

Stara Planina Mt. (new data); Rila Mt. (Golemansky and Todorov 1993).

Difflugia brevicolla

Cash, 1909

  • Difflugia pyriformis var. atricolor Penard, 1902

Distribution

Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (new data); Stara Planina Mt. (new data).

Difflugia bryophila

(Penard, 1902) Jung, 1942

  • Difflugia pyriformis var. bryophila Penard, 1902

  • Difflugia oblonga var. longicollis Gassowsky, 1936

  • Difflugia longicollis (Gassowsky, 1936) Ogden and Hedley, 1980

  • Difflugia gassowskii Ogden, 1983

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as synonym D. gassowskii (Rhodopes Mt., Rila Mt., Vitosha Mt.).

Difflugia distenda

Ogden, 1983

  • Difflugia acuminata var. inflata Penard, 1899

  • Difflugia bicruris Gauthier-Lièvre et Thomas, 1958.

Distribution

Pirin Mt. (new data); Vitosha Mt. (Todorov 1993, Todorov and Golemansky 1995).

Difflugia elegans

Penard, 1890

  • Difflugia amphoralis Hopkinson, 1909

  • Difflugia australis (Playfair, 1918) Gauthier-Lièvre et Thomas, 1958

  • Difflugia borodini Gassowsky, 1936

  • Difflugia elegans f. bicornis Jung, 1936

  • Difflugia elegans f. tricornis Jung, 1936

  • Difflugia juzephiniensis Dekhtyar, 1993

  • Difflugia leidyi Wailes, 1912

  • Difflugia Mereschkowsky, 1877

  • Difflugia tricornis (Jung, 1936) Ogden, 1983

  • Difflugia varians Penard, 1902

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as synonym D. amphoralis (Rila Mt., Vitosha Mt.).

Difflugia glans

Penard, 1902

Distribution

Rila Mt. (Todorov and Golemansky 2000).

Difflugia globulosa

Dujardin, 1837

  • Difflugia proteiformis Ehrenberg, 1838 subsp. globularis Wallich, 1864

  • Difflugia globularis (Wallich, 1864) Leidy, 1877

  • Difflugia chardezi Godeanu, 1972

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Todorov 1993, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as synonym D. globularis (Rhodopes Mt., Rila Mt., Vitosha Mt.).

Difflugia hiraethogii

Ogden, 1983

Distribution

Pirin Mt. (new data); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Difflugia lanceolata

Penard,1890

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990).

Difflugia lobostoma

Leidy, 1874

Distribution

Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006)

Difflugia lucida

Penard, 1890

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Difflugia mammillaris

Penard, 1893

Distribution

Rila Mt. (Todorov 2004).

Difflugia mica

Frenzel, 1892

Distribution

Rila Mt. (Todorov 2005); Vitosha Mt. (new data).

Difflugia microclaviformis

(Kourov, 1925) Ogden, 1983

  • Difflugia pyriformis var. venusta Penard 1902

  • Difflugia oblogna var. venusta Cash, 1909

  • Difflugia oblonga var. microclaviformis Kourov, 1925

Distribution

Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990).

Notes

The species has been recorded both as nominal species and as the infrasubspecific taxon Difflugia oblonga var. microclaviformis (Vitosha Mt.).

Difflugia minuta

Rampi, 1950

Distribution

Pirin Mt. (new data); Rila Mt. (Todorov 2004, Todorov 2005); Vitosha Mt. (new data).

Difflugia molesta

Penard, 1902

  • Difflugia levanderi Playfair, 1918

Distribution

Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov 2004, Todorov 2005, new data); Vitosha Mt. (new data).

Difflugia oblonga

Ehrenberg, 1838

  • Difflugia bacillifera Penard, 1890

  • Difflugia lacustris (Penard, 1899) Ogden, 1983

  • Difflugia oblonga f. cyphodera Jung, 1942

  • Difflugia oblonga var. incondita Gauthier-Lièvre et Thomas, 1958

  • Difflugia oblonga var. lacustris Cash and Hopkinson, 1909

  • Difflugia oblonga var. parva Thomas, 1954

  • Difflugia parva (Thomas, 1954) Ogden, 1983

  • Difflugia pyriformis var. lacustris Penard, 1899

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

Besides the nominal species, the synonyms D. parva (Rhodopes Mt., Rila Mt., Vitosha Mt.), D. lacustris (Rhodopes Mt., Vitosha Mt.), D. bacillifera (Rila Mt., Vitosha Mt.) and infrasubspecific taxa D. oblonga var. lacustris (Vitosha Mt.) and D. oblonga var. parva (Rila Mt., Vitosha Mt.) have also been recorded.

Difflugia penardi

Hopkinson,1909

  • Difflugia fallax Penard, 1890

  • Difflugia pyriformis var. tenuis Penard, 1890

  • Difflugia manicata Penard, 1902

  • Difflugia oblonga var. tenuis Wailes and Penard, 1911

  • Difflugia tenuis (Penard, 1890) Ogden, 1983

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as synonym D. manicata (Rhodopes Mt., Rila Mt., Vitosha Mt.).

Difflugia petricola

Cash, 1909

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov 2004, Todorov 2005).

Difflugia pristis

Penard, 1902

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Difflugia pulex

Penard, 1902

  • Difflugia minuta var. minor Godeanu, 1972

  • Difflugia ovalisina Beyens et Chardez, 1994

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Pateff 1924, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Difflugia pyriformis

Perty, 1849

Distribution

Rhodopes Mt. (Pateff 1924); Rila Mt. (Pateff 1924); Vitosha Mt. (Pateff 1924).

Difflugia rotunda

(Chardez, 1956) Ogden, 1983

  • Difflugia globularis var. sphaerica Chardez, 1956

Distribution

Rila Mt. (Todorov 2004).

Difflugia rubescens

Penard, 1891

Distribution

Pirin Mt. (Golemansky 1974, new data); Rila Mt. (Pateff 1924, Golemansky and Todorov 1993, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Difflugia stoutii

Ogden, 1983

Distribution

Rila Mt. (Todorov and Golemansky 2000).

Difflugia subaequalis

Penard, 1910

Distribution

Pirin Mt. (Golemansky 1974).

Difflugia urceolata

Carter, 1864

  • Difflugia urceolata var. olla Leidy, 1879

  • Difflugia urceolata var. sphaerica Playfair, 1917

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006).

Difflugia ventricosa

Deflandre, 1926

Distribution

Rhodopes Mt. (Golemansky et al. 2006).

Difflugia viscidula

Penard, 1902

  • Difflugia lemani Blanc, 1892

  • Difflugia histrio Penard, 1908

  • Difflugia lemani var. palustris Chardez, 1956

  • Difflugia lebes var. masurica Schönborn, 1965

  • Difflugia lebes var. bretschkoi Laminger, 1971

  • Difflugia finstertaliensis Laminger, 1971

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Vitosha Mt. (Pateff 1928, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990).

Notes

The species has been recorded as nominal species, as synonym D. lemani (Vitosha Mt.), as infrasubspecific taxon D. lemani var. palustris (Vitosha Mt.) and as Difflugia sp. (Vitosha Mt.).

Lagenodifflugia

Medioli and Scott, 1983

Lagenodifflugia bryophila

(Penard, 1902) Ogden, 1987

  • Pontigulasia bryophila Penard, 1902

  • Pontigulasia bryophila var. elachys Jung, 1942

  • Pontigulasia varadi Godeanu, 1972

  • Zivkovicia bryophila (Penard, 1902) Ogden, 1983

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as synonym P. bryophila (Rhodopes Mt., Rila Mt., Vitosha Mt.).

Lagenodifflugia montana

(Ogden and Zivkovic, 1983) Ogden, 1987

  • Pontigulasia montana Ogden and Zivkovic, 1983

Distribution

Pirin Mt. (new data); Rila Mt. (new data).

Lagenodifflugia vas

(Leidy, 1874) Medioli and Scott, 1983

  • Difflugia vas Leidy, 1874

  • Difflugia pyriformis var. vas Leidy, 1879

  • Pontigulasia vas (Leidy) Schouteden, 1906

  • Zivkovicia vas (Leidy, 1874) Ogden, 1983 (in part)

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (new data); Vitosha Mt. (new data).

Pontigulasia

Rhumbler, 1896

Pontigulasia elisa

(Penard, 1893) Schouteden, 1906

  • Difflugia elisa Penard, 1893

  • Pontigulasia incisa Rhumbler, 1896

Distribution

Pirin Mt. (new data); Rila Mt. (Golemansky and Todorov 1993); Vitosha Mt. (Todorov 1993, Todorov and Golemansky 1995).

Pontigulasia rhumbleri

Hopkinson, 1920

  • Pontigulasia compressa Rhumbler, 1896

  • Pontigulasia rhumbleri (non Pontigulasia compressa (Carter, 1864))

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Todorov 2004, Todorov 2005); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924).

Notes

The species has been recorded both as nominal species and as synonym P. compressa (Rhodopes Mt., Rila Mt., Vitosha Mt.).

Zivkovicia

Ogden, 1987

Zivkovicia compressa

(Carter, 1864)

  • Difflugia compressa Carter, 1864

  • Difflugia pyriformis var. vas sub- var. bigibbosa Penard, 1899

  • Pontigulasia bigibbosa Penard, 1902

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as synonym P. bigibbosa (Pirin Mt., Vitosha Mt.). Furthermore, in several publications on the testate amoebae from Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995), the infrasubspecific taxa Difflugia compressa var. africana Gauthier-Lièvre et Thomas, 1958 has erroneously been recorded, because the description of the found individuals fully corresponds to Z. compressa.

Zivkovicia spectabilis

(Penard, 1902) Ogden, 1987

  • Pontigulasia spectabilis Penard, 1902

  • Zivkovicia vas (Leidy, 1874) Ogden, 1983 (in part)

Distribution

Rhodopes Mt. (Golemansky 1968); Rila Mt. (Todorov 2004).

Notes

The species has been recorded both as nominal species and as synonym P. spectabilis (Rhodopes Mt.).

Centropyxidae

Jung, 1942

Centropyxis

Stein, 1857

Centropyxis aculeata

(Ehrenberg, 1830) Stein, 1857

  • Arcella aculeata Ehrenberg, 1830

  • Difflugia aculeata Perty, 1852

  • Echinopyxis aculeata Claparède et Lachmann, 1859

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

Besides the nominal species, two infrasubspecific taxa Centropyxis aculeata var. oblonga Deflandre, 1929 (Rhodopes Mt., Rila Mt., Vitosha Mt.) and Centropyxis aculeata var. grandis Deflandre, 1929 (Vitosha Mt.) have also been recorded.

Centropyxis aerophila

Deflandre, 1929

  • Difflugia constricta Ehrenberg, 1838

  • Arcella arctiscon Ehrenberg, 1854

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

Besides the nominal species, the infrasubspecific taxon Centropyxis aerophila var. sphagnicola Deflandre, 1929 has also been recorded (Rila Mt., Vitosha Mt.).

Centropyxis cassis

(Wallich, 1864) Deflandre, 1929

  • Difflugia cassis Wallich, 1864

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov 2004, Todorov 2005, Todorov and Golemansky 2000, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Centropyxis constricta

(Ehrenberg, 1838) Penard, 1902

  • Difflugia constricta Ehrenberg, 1838

  • Arcella constricta Ehrenberg, 1841

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006); Rila Mt. (Pateff 1924, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1990, new data).

Notes

The species has been recorded both as nominal species and as synonym D. constricta (Rhodopes Mt., Rila Mt., Vitosha Mt.).

Centropyxis cryptostoma

Bonnet, 1959

Distribution

Rila Mt. (new data).

Centropyxis discoides

(Penard, 1890) Deflandre, 1929

  • Centropyxis aculeata var. discoides Penard, 1890

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, new data).

Centropyxis ecornis

(Ehrenberg, 1841) Leidy, 1879

  • Arcella ecornis Ehrenberg, 1841

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Todorov 1993, Todorov and Golemansky 1995, new data).

Centropyxis elongata

(Penard, 1890) Thomas, 1959

  • Difflugia constricta var. elongata Penard, 1890

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, new data); Vitosha Mt. (Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995).

Centropyxis gibba

Deflandre, 1929

Distribution

Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov 2005).

Centropyxis hirsuta

Deflandre, 1929

Distribution

Rila Mt. (Todorov 2004).

Centropyxis laevigata

Penard, 1890

Distribution

Rhodopes Mt. (Golemansky et al. 2006).

Centropyxis minuta

Deflandre, 1929

  • Difflugia constricta p. p. Leidy, 1879, PL. XVIII, figs. 15-16

  • Difflugia constricta p. p. Penard, 1902, p. 299, figs. 13-14

Distribution

Rhodopes Mt. (Golemansky et al. 2006).

Centropyxis orbicularis

Deflandre, 1929

Distribution

Pirin Mt. (new data); Rila Mt. (new data); Stara Planina Mt. (new data).

Centropyxis plagiostoma

Bonnet and Thomas, 1955

Distribution

Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993).

Centropyxis platystoma

(Penard, 1890) Deflandre, 1929

  • Difflugia platystoma Penard, 1890

  • Difflugia constricta p. p. Leidy, 1879, PL. XVIII, figs. 20-21

  • Difflugia constricta p. p. Penard, 1902, p. 299, figs. 8, 11, 12

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

Besides the nominal species, the infrasubspecific taxon Centropyxis platystoma var. armata Deflandre, 1929 has also been recorded (Vitosha Mt.).

Centropyxis spinosa

(Cash, 1905) Deflandre, 1929

  • Centropyxis aculeata var. spinosa Cash, 1905

Distribution

Pirin Mt. (new data); Vitosha Mt. (Todorov 1993, Todorov and Golemansky 1995).

Centropyxis sylvatica

(Deflandre, 1929) Bonnet and Thomas, 1955

  • Centropyxis aerophila var. sylvatica Deflandre, 1929

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Trigonopyxidae

Loeblich and Tappan, 1964

Cyclopyxis

Deflandre, 1929

Cyclopyxis arcelloides

(Penard, 1902) Deflandre, 1929

  • Centropyxis arceloides Penard, 1902

Distribution

Vitosha Mt. (Pateff 1928, Golemansky 1965, Golemansky and Todorov 1990, new data).

Notes

The species is recorded both as nominal species and as synonym Centropyxis arceloides (Vitosha Mt.).

Cyclopyxis eurystoma

Deflandre, 1929

  • Centropyxis (Cyclopyxis) eurystoma Deflandre, 1929

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Cyclopyxis kahli

Deflandre, 1929

  • Centropyxis (Cyclopyxis) kahli Deflandre, 1929

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, new data).

Cyclopyxis pirini

Golemansky, 1974

Distribution

Pirin Mt. (Golemansky 1974); Vitosha Mt. (Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Cyclopyxis puteus

Thomas, 1960

Distribution

Rila Mt. (new data).

Trigonopyxis

Penard, 1912

Trigonopyxis arcula

(Leidy, 1879) Penard, 1912

  • Difflugia arcula Leidy, 1879

  • Cystidina arcula (Leidy, 1879) Volz, 1929

Distribution

Rila Mt. (new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, new data).

Plagiopyxidae

Bonnet and Thomas, 1960

Bullinularia

Deflandre, 1953

Bullinularia indica

(Penard, 1907) Deflandre, 1953

  • Bulinella indica Penard, 1907

  • Bullinula indica Penard, 1912

Distribution

Pirin Mt. (new data); Rila Mt. (new data).

Plagiopyxis

Penard, 1910

Plagiopyxis callida

Penard, 1910

  • Bullinula indica var. callida Jung, 1936

Distribution

Pirin Mt. (Golemansky 1974, new data); Rila Mt. (new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Plagiopyxis declivis

Thomas, 1955

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, new data); Stara Planina Mt. (new data); Vitosha Mt. (Todorov 1993, Todorov and Golemansky 1995, new data).

Plagiopyxis glyphostoma

Bonnet, 1959

Distribution

Vitosha Mt. (Todorov 1993, Todorov and Golemansky 1995).

Plagiopyxis labiata

Penard, 1910

  • Centropyxia labiata Bartoš, 1947

Distribution

Pirin Mt. (Golemansky 1974); Rila Mt. (Golemansky and Todorov 1993).

Plagiopyxis minuta

Bonnet, 1959

Distribution

Vitosha Mt. (Todorov 1993, Todorov and Golemansky 1995).

Plagiopyxis oblonga

(Bonnet et Thomas, 1955)

Distribution

Stara Planina Mt. (new data).

Hyalospheniidae

(Schulze, 1877) Kosakyan et Lara, 2012

Hyalosphenia

(Stein, 1857) Schulze, 1877

Hyalosphenia elegans

(Leidy, 1874) Leidy, 1879

  • Difflugia (Catharia) elegans Leidy, 1874

  • Hyalosphenia turfacea Taránek, 1881

Distribution

Vitosha Mt. (Todorov 1993, Todorov and Golemansky 1995).

Hyalosphenia papilio

(Leidy, 1874) Leidy, 1875

  • Difflugia (Catharia) papilio Leidy, 1874

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000,Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965,Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Nebela

(Leidy, 1874) sensu Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

Nebela aliciae

Mitchell et Lara, 2013

Distribution

Stara Planina Mt. (new data); Vitosha Mt. (new data).

Nebela collaris

(Ehrenberg 1848) Leidy, 1879

  • Difflugia collaris Ehrenberg 1848

  • Diffluga cancellata Ehrenberg 1848

  • Difflugia reticulata Ehrenberg 1848

  • Difflugia carpio Ehrenberg 1854

  • Difflugia laxa Ehrenberg 1871

  • Difflugia cellulifera Ehrenberg 1874

  • Nebela numata Leidy 1874

  • Nebela bohemica Taranek 1882

  • Nebela sphagnophila (Steinecke) Van Oye 1933

  • Nebela tincta var. major Deflandre 1936

  • Nebela tincta f. stenostoma Jung 1936

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, Kosakyan et al. 2012; new data).

Notes

The species has been recorded as nominal species, as synonym N. bohemica (Pirin Mt., Rhodopes Mt., Rila Mt., Vitosha Mt.) and as infrasubspecific taxon Nebela tincta var. major (Vitosha Mt.).

Nebela flabellulum

Leidy, 1874

  • Difflugia (Nebela) flabellulum Leidy, 1874

Distribution

Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Stara Planina Mt. (new data).

Nebela guttata

Kosakyan et Lara, 2013

Distribution

Pirin Mt. (new data); Rila Mt. (new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Nebela militaris

Penard, 1890

Distribution

Pirin Mt. (new data); Rila Mt. (Pateff 1924, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Nebela pechorensis

Kosakyan et Mitchell, 2013

Distribution

Pirin Mt. (new data); Rila Mt. (new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Nebela rotunda

Penard, 1890

  • Nebela tincta var. rotunda Penard, 1890

Distribution

Vitosha Mt. (new data).

Nebela tincta

(Leidy, 1879) Awerintzew, 1906

  • Hyalosphenia tincta Leidy, 1879

  • Nebela bursella Vejdovsky, 1882

  • Nebela minor Penard, 1902

  • Nebela parvula Cash, 1909

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Golemansky and Todorov 1993, Todorov and Golemansky 2000, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as synonyms N. bursella (Rila Mt, Vitosha Mt.), N. minor (Rhodopes Mt., Rila Mt.) and N. parvula (Pirin Mt., Rhodopes Mt., Vitosha Mt.).

Gibbocarina

Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

Gibbocarina galeata

(Penard, 1890) Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

  • Nebela galeata Penard, 1890

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

So far, all records for the species have been as N. galeata.

Longinebela

Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

Longinebela ampulla

Todorov, Bankov and Ganeva, 2018

Distribution

Stara Planina Mt. (Todorov et al. 2018).

Longinebela golemanskyi

(Todorov, 2010) Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

  • Nebela golemanskyi Todorov, 2010

Distribution

Vitosha Mt. (Todorov 2010, new data).

Notes

The species has been recorded as N. golemanskyi.

Longinebela penardiana

(Deflandre, 1936) Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

  • Nebela penardiana Deflandre, 1936

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, Kosakyan et al. 2012, new data).

Notes

So far, all records for the species have been as N. penardiana.

Longinebela speciosa

(Deflandre, 1936) Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

  • Nebela speciosa Deflandre, 1936

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, Kosakyan et al. 2012, new data).

Notes

So far, all records for the species have been as N. speciosa.

Longinebela tubulosa

(Penard, 1902) Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

  • Nebela tubulosa Penard, 1902

Distribution

Pirin Mt. (new data); Rila Mt. (Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Todorov 1993, Todorov and Golemansky 1995, Kosakyan et al. 2012, new data).

Notes

So far, all records for the species have been as N. tubulosa.

Padaungiella

Lara et Todorov, 2012

Padaungiella americana

(Taranek, 1882)

  • Nebela americana Taranek, 1882.

Distribution

Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1990).

Notes

All records for the species have been as N. americana (Rhodopes Mt., Vitosha Mt.). This species is with doubtful identity since it is sharing overlapping characters with P. lageniformis and with P. wailesi.

Padaungiella lageniformis

(Penard, 1890) Lara et Todorov, 2012

  • Nebela lageniformis Penard, 1890

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, Kosakyan et al. 2012, new data).

Notes

All records for the species (except these in Kosakyan et al. 2012) have been as N. lageniformis.

Padaungiella nebeloides

(Gauthier-Lièvre and Thomas, 1958) Lara et Todorov, 2012

  • Difflugia nebeloides Gauthier-Lièvre and Thomas, 1958

  • Nebela nebeloides (Gauthier-Lièvre and Thomas, 1958) Todorov, Golemansky and Meisterfeld, 2010

Distribution

Pirin Mt. (new data); Rila Mt. (new data); Stara Planina Mt. (new data); Vitosha Mt. (Todorov et al. 2010, new data).

Notes

The species has been recorded by the synonymous name N. nebeloides. It should be noted that Mazei and Warren (2014) erroneously synonymised D. nebeloides with D. linearis (Penard, 1890) Gautier-Lièvre et Thomas, 1958, because they have not taken into account the fact that this species has recently been transferred from the genus Difflugia into the genus Nebela and subsequently in the newly described genus Padaungiella (Todorov et al. 2010, Kosakyan et al. 2012).

Padaungiella tubulata

(Brown, 1911) Lara et Todorov, 2012

  • Nebela tubulata Brown, 1911

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

So far, all records for the species have been as N. tubulata.

Padaungiella wailesi

(Deflandre, 1936) Lara et Todorov, 2012

  • Nebela wailesi Deflandre, 1936

Distribution

Rhodopes Mt. (Golemansky et al. 2006).

Notes

The species has been recorded by the synonymous name N. wailesi.

Planocarina

Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

Planocarina carinata

(Archer, 1867) Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

  • Nebela carinata (Archer, 1867) Leidy, 1879

Distribution

Rila Mt. (Golemansky and Todorov 1993); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995).

Notes

So far, all records for the species have been as N. carinata.

Quadrulella

(Cockerell, 1909) sensu Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

Quadrulella longicollis

(Taranek, 1882)

  • Quadrulella symmetrica var. longicollis Taranek, 1882

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, Kosakyan et al. 2012, new data).

Notes

So far, all records for the species (except this one of Kosakyan et al. 2012) have been as the infrasubspecific taxon Q. symmetrica var. longicollis (Rhodopes Mt., Rila Mt., Vitosha Mt.).

Quadrulella symmetrica

(Wallich, 1864) Cockerell, 1909

  • Difflugia proteiformis var. symmetrica Wallich, 1863

  • Difflugia pyriformis var. symmetrica Wallich, 1864

  • Difflugia symmetrica Wallich, 1864

  • Assulina assulata Ehrenberg, 1871

  • Assulina leptolepis Ehrenberg, 1871

  • Difflugia assulata Ehrenberg, 1871

  • Difflugia carolensis Ehrenberg, 1871

  • Quadrula symmetrica Schulze, 1875

  • Nebela (Quadrulella) symmetrica Deflandre, 1936

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2004,Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, Kosakyan et al. 2012, new data).

Notes

Besides the nominal species, the infrasubspecific taxon Quadrulella symmetrica var. irregularis Wailes et Penard, 1911 has also been recorded (Rhodopes Mt., Rila Mt., Vitosha Mt.).

Quadrulella tubulata

Gauthier-Lièvre, 1953

Distribution

Pirin Mt. (Golemansky 1974).

Quadrulella variabilis

Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara, 2016

Distribution

Pirin Mt. (new data); Rila Mt. (new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Phryganellina

Bovee, 1985

Phryganellidae

Jung, 1942

Phryganella

Penard, 1902

Phryganella acropodia

(Hertwig and Lesser, 1874) Hopkinson, 1909

  • Difflugia acropodia Hertwig and Lesser, 1874

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Phryganella hemisphaerica

(Penard, 1890) Penard, 1902

  • Pseudodifflugia hemisphaerica Penard, 1890

  • Difflugia globulosa Leidy, 1879 (in part)

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004,Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (new data)

Phryganella nidulus

Penard, 1902

  • Difflugia globulosa Leidy, 1879 (in part)

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006); Rila Mt. (Todorov 2004, Todorov 2005, new data); Vitosha Mt. (Pateff 1924).

Phryganella paradoxa

Penard, 1902

Distribution

Rhodopes Mt. (Golemansky et al. 2006); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Cryptodifflugiidae

Jung, 1942

Cryptodifflugia

Penard, 1890

Cryptodifflugia compressa

Penard, 1902

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, new data).

Cryptodifflugia oviformis

Penard, 1890

  • Difflugiella oviformis Bonnet and Thomas, 1955

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2004, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1928, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as synonym D. oviformis (Rila Mt., Vitosha Mt.), as well as infrasubspecific taxon Difflugiella oviformis var. fusca Bonnet and Thomas, 1955 (Rhodopes Mt., Rila Mt., Vitosha Mt.).

Wailesella

Deflandre, 1928

Wailesella eboracensis

(Wailes and Penard, 1911) Deflandre, 1928

  • Cryptodifflugia eboracensis Wailes and Penard, 1911

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1928, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as synonym C. eboracensis (Vitosha Mt.).

Arcellinida

Argynnia

Vucetich, 1974

Argynnia bipes

(Carter, 1870) Murray, 1870

  • Difflugia bipes Carter, 1870

  • Nebela bipes Murray, 1870

  • Nebela bicornis West, 1905

Distribution

Rhodopes Mt. (Pateff 1928, Golemansky et al. 2006); Vitosha Mt. (Pateff 1928, Golemansky and Todorov 1990).

Notes

The species has been recorded as synonym N. bipes (Rhodopes Mt., Vitosha Mt.).

Argynnia dentistoma

(Penard, 1890)

  • Nebela dentistoma Penard, 1890

  • Nebela crenulata Penard, 1893

  • Nebela collaris Leidy, 1879 (in part)

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

So far, all records for the species have been as synonyms N. dentistoma (Pirin Mt., Rhodopes Mt., Rila Mt., Vitosha Mt.), N. crenulata (Rhodopes Mt., Rila Mt., Vitosha Mt.), as well as infrasubspecific taxa Nebela dentistoma var. oblonga Gauthier-Lièvre, 1853 (Rila Mt.).

Argynnia vitraea

(Penard, 1899)

  • Nebela vitraea Penard, 1899

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded as synonym N. vitraea (Rhodopes Mt., Rila Mt., Vitosha Mt.).

Awerintzewia

Schouteden, 1906

Awerintzewia cyclostoma

(Penard, 1902) Schouteden, 1906

  • Heleopera cyclostoma Penard, 1902

Distribution

Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006).

Notes

The species has been recorded both as nominal species and as synonym H. cyclostoma (Rhodopes Mt.).

Heleopera

Leidy, 1879

Heleopera petricola

Leidy, 1879

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

Besides the nominal species, two infrasubspecific taxa Heleopera petricola var. amethystea Penard, 1899 (Rila Mt.) and Heleopera petricola var. major Deflandre, 1928 (Vitosha Mt.) have also been recorded.

Heleopera rosea

Penard, 1890

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Heleopera sphagni

(Leidy, 1874)

  • Difflugia (Nebela) sphagni Leidy, 1874

  • Nebela sphagni Leidy, 1876

  • Nebela picta Leidy, 1879

Distribution

Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993).

Heleopera sylvatica

Penard, 1890

Distribution

Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov 2005, new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990).

Lesquereusia

Schlumberger, 1845

Lesquereusia epistomium

Penard, 1902

  • Lecquereusia jurassica var. epistomium Penard, 1893

  • Lecquereusia epistomium Penard, 1902

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968,Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Lesquereusia gibbosa

Thomas and Gauthier-Lièvre, 1859

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Lesquereusia modesta

Rhumbler, 1896

  • Difflugia spiralis Leidy, 1879 (in part)

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Lesquereusia spiralis

(Ehrenberg, 1840) Bütschli, 1880

  • Difflugia spiralis Ehrenberg, 1840

  • Lecquereusia jurassica Schlumberger, 1845

  • Difflugia helix Cohn, 1853

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Pyxidicula

Ehrenberg, 1838

Pyxidicula patens

(Claparede and Lachmann, 1858)

  • Arcella patens Claparede and Lachmann, 1858

Distribution

Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006).

Rhizaria

Cavalier-Smith, 2002

Stramenopiles

Patterson, 1989, emend. Adl et al., 2005

Labyrinthomycetes

Dick, 2001

Amphitremida

(Poch, 1913) Gomma, Mitchell and Lara, 2013

Amphitremidae

Poch, 1913

Archerella

Loeblich and Tappan, 1961

Archerella flavum

(Archer, 1877) Loeblich and Tappan, 1961

  • Ditrema flavum Archer, 1877

  • Amphitrema flavum Archer, 1877

Distribution

Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded as synonym A. flavum (Rhodopes Mt., Vitosha Mt.).

Cercozoa

Cavalier-Smith, 1998, emend. Adl et al., 2005

Filosa

Cavalier-Smith, 2003

Silicofilosea

Adl et al., 2005, emend. Adl et al., 2012

Euglyphida

Copeland, 1956, emend. Cavalier-Smith, 1997

Euglyphidae

Wallich, 1864

Euglypha

Dujardin, 1841

Euglypha acanthophora

(Ehrenberg, 1841) Perty, 1849

  • Difflugia acanthophora Ehrenberg, 1841

  • Euglypha alveolata Dujardin, 1841 (in part)

  • Euglypha setigera Perty, 1852 (in part)

  • Difflugia setigera Ehrenberg, 1871

  • Euglypha acanthophora Difflugia Setigerella acanthophora Ehrenberg, 1871

  • Euglypha brachiata Penard, 1902 (non Leidy, 1879)

  • Euglypha alveolata var. gracilis Taránek, 1881 (in part)

  • Euglypha armata Wailes and Penard, 1911

  • Euglypha australica Playfair, 1918 (in part)

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

Pateff (1924) and Golemansky et al. (2006) erroneously recorded the species E. brachiata (Rhodopes Mt., Vitosha Mt.), because the description of the found individuals fully corresponds to E. acanthophora.

Euglypha aspera

Penard, 1899

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006); Rila Mt. (Todorov 2004, new data).

Euglypha bryophila

Brown, 1911

  • Euglypha Vejdovsky, 1882

  • Euglypha cristata Penard, 1890 (in part)

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, new data).

Euglypha ciliata

(Ehrenberg, 1848), Leidy, 1878

  • Difflugia ciliata Ehrenberg, 1848

  • Euglypha setigera Perty, 1852 (in part)

  • Difflugia pilosa Ehrenberg, 1871

  • Euglypha ciliata DifflugiaSetigerellaciliata Ehrenberg, 1871

  • Euglypha ciliata Difflugia Setigerella pilosa Ehrenberg, 1871

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as infrasubspecific taxon E. ciliata f. glabra Wailes, 1915 (Rhodopes Mt., Rila Mt.).

Euglypha compressa

Carter, 1864

  • Euglypha ampullacea Hertwig and Lesser, 1874

  • Euglypha ciliata Leidy, 1879 (in part)

  • Euglypha Vejdovsky, 1882 (in part)

  • Euglypha compressa ? Euglypha zonata Maggi, 1888

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as infrasubspecific taxon E. compressa f. glabra Wailes, 1915 (Rhodopes Mt.).

Euglypha crenulata

Wailes, 1912

Distribution

Vitosha Mt. (Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995).

Notes

The species has been recorded as infrasubspecific taxon E. crenulata var. minor Wailes, 1912.

Euglypha cristata

Leidy, 1874

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Euglypha denticulata

Brown, 1912

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Euglypha filifera

Penard, 1890

  • Euglypha setigera Perty, 1852 (in part)

  • Euglypha ciliata Leidy, 1879 (in part)

  • Euglypha longispina Taránek, 1881

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990,Todorov 1993, Todorov and Golemansky 1995, new data).

Euglypha laevis

(Ehrenberg, 1845) Perty, 1849

  • Difflugia laevis Ehrenberg, 1845

  • Euglypha alveolata Leidy, 1879 (in part)

  • Euglypha Vejdovsky, 1882

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924,Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Euglypha rotunda

Wailes and Penard, 1911

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Euglypha strigosa

(Ehrenberg, 1871) Leidy, 1878

  • Difflugia strigosa Ehrenberg, 1871

  • Euglypha strigosa DifflugiaSetigerellastrigosa Ehrenberg, 1871

  • Euglypha ciliata var. strigosa Leidy, 1879 (in part)

  • Euglypha heterospina Penard, 1890

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1928, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990,Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

Besides the nominal species, two infrasubspecific taxa Euglypha strigosa f. glabra Wailes and Penard, 1911 (Rila Mt.) and Euglypha strigosa f. heterospina Wailes and Penard, 1911 (Rhodopes Mt., Rila Mt., Vitosha Mt.) have also been recorded.

Euglypha tuberculata

Dujardin, 1841

  • Difflugia areolata Ehrenberg, 1841

  • Euglypha alveolata Dujardin, 1841 (in part)

  • Euglypha tuberculosa Dujardin, 1841

  • Difflugia alveolata Pritchard, 1861

  • Euglypha pusilla Entz, 1877

  • Euglypha Vejdovsky, 1882

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as synonym E. alveolata (Rhodopes Mt., Vitosha Mt.).

Trinematidae

Hoogenraad and De Groot 1940, emend Adl et al. 2012

Trinema

Dujardin, 1841

Trinema complanatum

Penard, 1890

  • Trinema complanatum ? Arcella nidus-pendulus Ehrenberg, 1841

  • Trinema acinus Leidy, 1879 (in part)

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

Besides the nominal species, two infrasubspecific taxa Trinema complanatum var. aerophila (Decloître, 1950) Bonnet and Thomas, 1960 (Vitosha Mt.) and Trinema complanatum var. globulosa Chardez, 1959 (Rhodopes Mt., Vitosha Mt.) have also been recorded.

Trinema enchelys

(Ehrenberg, 1838) Leidy, 1878

  • Difflugia enchelys Ehrenberg, 1838 (in part)

  • Trinema acinus Dujardin, 1841

  • Arcella enchelys Ehrenberg, 1844

  • Euglypha pleurostoma Carter, 1857

  • Euglypha enchelys Wallich, 1864

  • Trinema (Difflugia) encheli Crevier, 1870

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Trinema galeata

(Penard, 1890) Jung, 1942

  • Trinema enchelys var. galeata Penard, 1890

Distribution

Rila Mt. (Golemansky and Todorov 1993).

Trinema grandis

(Chardez, 1960) Golemansky, 1963

  • Trinema enchelys var. grandis Chardez, 1960

Distribution

Rila Mt. (Golemansky and Todorov 1993, new data).

Trinema lineare

Penard, 1890

  • Difflugia enchelys Ehrenberg, 1838 (in part)

  • Arcella hyalina Ehrenberg, 1841

  • Arcella enchelys Ehrenberg, 1854

  • Trinema acinus Leidy, 1879 (in part)

  • Trinema enchelys forma β Awerintzew, 1906

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Corythion

Taranek, 1881

Corythion delamarei

Bonnet and Thomas, 1960

Distribution

Vitosha Mt. (Todorov 1993, Todorov and Golemansky 1995).

Corythion dubium

Taránek, 1881

  • Arcella constricta Ehrenberg, 1841 (in part)

  • Arcella disphaera Ehrenberg, 1841 (in part)

  • Trinema acinus Leidy, 1879 (in part)

  • Trinema constricta Certes, 1889

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

Besides the nominal species, two infrasubspecific taxa Corythion dubium var. aerophila Decloître, 1950 (Vitosha Mt.) and Corythion dubium var. orbicularis Penard, 1910 (Vitosha Mt.) have also been recorded.

Playfairina

Thomas, 1961

Playfairina valkanovi

Golemansky, 1966

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1966, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, Golemansky and Todorov 2006,new data).

Sphenoderiidae

Chatelain, Meisterfeld, Roussel-Delif and Lara, 2013

Sphenoderia

Schlumberger, 1845

Sphenoderia fissirostris

Penard, 1890

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993,Todorov and Golemansky 1995, new data).

Sphenoderia lenta

Schlumberger, 1845

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Sphenoderia minuta

Deflandre, 1931

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Sphenoderia ovoidea

Jung, 1942

Distribution

Stara Planina Mt. (new data); Vitosha Mt. (new data).

Sphenoderia splendida

(Playfair, 1917) Deflandre, 1931

  • Sphenoderia fissirostris var. splendida Playfair, 1917

Distribution

Pirin Mt. (new data); Rila Mt. (new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Trachelocorythion

Bonnet, 1979

Trachelocorythion pulchellum

(Penard, 1890) Bonnet, 1979

  • Trachelocorythion pulchellum ? Euglypha minima Perty, 1852

  • Corythion pulchellum Penard, 1890

  • Chorythion pulchellum Awerintzew, 1907

  • Trachelocorythion pulchellum ? Hyalina neta Jung, 1942

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Assulinidae

Lara et al., 2007

Assulina

Leidy, 1879

Assulina muscorum

Greeff, 1888

  • Assulina seminulum Leidy, 1879 (in part)

  • Assulina minor Penard, 1890

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Assulina seminulum

(Ehrenberg, 1848) Leidy, 1879

  • Difflugia seminulum Ehrenberg, 1848

  • Assulina seminulum DifflugiaAssulina seminulum Ehrenberg, 1871

  • Difflugia semen Ehrenberg, 1871

  • Euglypha brunnea Leidy, 1874

  • Euglypha seminulum Leidy, 1878

Distribution

Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924, Golemansky and Todorov 1993, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1990, new data).

Placocista

Leidy, 1879

Placocista glabra

Penard, 1906

Distribution

Pirin Mt. (Golemansky 1974).

Notes

The species has been recorded as infrasubspecific taxon Placocista glabra var. minima Decloître, 1955 (Pirin Mt.).

Placocista spinosa

(Carter, 1865) Leidy, 1879

  • Euglypha spinosa Carter, 1865

Distribution

Rila Mt. (Golemansky and Todorov 1993).

Cyphoderiidae

de Saedeleer, 1934

Cyphoderia

Schlumberger, 1845

Cyphoderia amphoralis

(Wailes and Penard, 1911)

  • Cyphoderia trochus var. amphoralis Wailes and Penard, 1911

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Todorov et al. 2009); Rila Mt. (Heger et al. 2010, new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Cyphoderia ampulla

(Ehrenberg, 1840) Leidy, 1878

  • Difflugia ampulla Ehrenberg, 1840

  • Difflugia lagena Ehrenberg, 1841

  • Cyphoderia margaritacea Schlumberger, 1845

  • Euglypha curvata Perty, 1852

  • Lagynis baltica Schultze, 1854

  • Euglypha ampulla Claparède and Lachmann, 1859

  • Euglypha baltica Wallich, 1864

  • Euglypha margaritacea Wallich, 1864

  • Difflugia Ehrenberg, 1869

  • Difflugia adunca Ehrenberg, 1871

  • Difflugia alabamensis Ehrenberg, 1871

  • Difflugia uncinnata Ehrenberg, 1871

  • Difflugia margaritacea Ehrenberg, 1871

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Pateff 1924, Golemansky et al. 2006; Todorov et al. 2009, Heger et al. 2010); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2004, Todorov 2005, Todorov et al. 2009, new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, Todorov et al. 2009, Heger et al. 2010, new data).

Cyphoderia major

(Penard, 1891)

  • Cyphoderia margaritacea var. major Penard, 1891

Distribution

Pirin Mt. (new data); Rila Mt. (Todorov et al. 2009, Heger et al. 2010, new data); Stara Planina Mt. (new data); Vitosha Mt. (new data).

Campascus

Leidy, 1879

Campascus minutus

Penard, 1899

  • Campascus triqueter var. minuta Awerintzew, 1906

Distribution

Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, new data); Stara Planina Mt. (new data); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990, new data).

Campascus triqueter

Penard, 1891

Distribution

Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000); Vitosha Mt. (Golemansky 1965, Golemansky and Todorov 1990,Todorov 1993, Todorov and Golemansky 1995).

Paulinellidae

de Saedeller 1934, emend. Adl et al. 2012

Paulinella

Lauterborn, 1895

Paulinella chromatophora

Lauterborn, 1895

Distribution

Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov 2004).

INCERTAE SEDIS euglyphid testate amoebae

Tracheleuglypa

Deflandre, 1928

Tracheleuglypa acolla

Bonnet et Thomas, 1955

Distribution

Pirin Mt. (new data); Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Todorov and Golemansky 2000, Todorov 2005, new data); Stara Planina Mt. (new data); Vitosha Mt. (Todorov 1993, Todorov and Golemansky 1995, new data).

Tracheleuglypa dentata

(Moniez, 1888) Deflandre, 1928

  • Sphenoderia lenta Leidy, 1879 (in part)

  • Euglypha Vejdovsky, 1882

  • Euglypha dentata Moniez, 1888

  • Sphenoderia dentata Penard, 1890

Distribution

Pirin Mt. (Golemansky 1974, new data); Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000, Todorov 2005 new data); Stara Planina Mt. (new data); Vitosha Mt. (Pateff 1924, Golemansky 1965, Golemansky and Todorov 1985, Golemansky and Todorov 1990, Todorov 1993, Todorov and Golemansky 1995, new data).

Notes

The species has been recorded both as nominal species and as synonym S. dentata (Vitosha Mt.).

Chlamydophryidae

de Saedeleer, 1934

Lecythium

Hertwig and Lesser, 1874

Lecythium mutabilis

(Bailey, 1853)

  • Pamphagus mutabilis Bailey, 1853

  • Pamphagus avidus Leidy, 1879

  • Lecythium mutabile Wailes, 1915

Distribution

Rila Mt. (Pateff 1924).

Notes

The species has been recorded as synonym P. mutabilis (Rila Mt.).

Pseudodifflugiidae

de Saedeleer, 1934

Pseudodifflugia

Schlumberger, 1845

Pseudodifflugia fascicularis

Penard, 1902

Distribution

Rhodopes Mt. (Golemansky 1968, Golemansky et al. 2006); Rila Mt. (Pateff 1924).

Pseudodifflugia gracilis

Schlumberger, 1845

  • Pleurophrys sphaerica Claparède and Lachmann, 1858

  • Pleurophrys angulata Mereschkovsky, 1879

Distribution

Rhodopes Mt. (Golemansky et al. 2006); Rila Mt. (Golemansky and Todorov 1993, Todorov and Golemansky 2000).

Discussion

Prior to our investigation, the number of known Sphagnum-dwelling testate amoebae in Bulgaria was 155. Our study increases this number with 16 species and the present checklist comprises 171 species classified into 43 genera, 20 families, three orders, three classes and three phyla. We present data for 16 new Sphagnum-dwelling testate amoebae in Bulgaria and new distribution data for 134 species. Of them, 99 species are recorded from Stara Planina Mt., for which there was no available data to date. Additionally we report 69 new species for Pirin Mt., 21 for Vitosha Mt. and 18 for Rila Mt. Thirty six species have been synonymised according to the latest taxonomic changes. All known synonyms of valid names are also listed. The species Euglypha brachiata Penard, 1902 and the infrasubspecific taxa Difflugia compressa var. africana Gauthier-Lièvre et Thomas, 1958 have erroneously been recorded, because the descriptions of the found individuals fully correspond to E. acanthophora and Z. compressa, respectively. These misidentified taxa have been transferred to valid species. Three of the recorded species have not been included in the checklist, because they are currently not refering to testate amoebae (Cochliopodium bilimbosum and C. echinatum are naked amoebae and Microgromia elegantula is freshwater foraminifera).

About 30% (51 species) of all recorded testate amoebae are typical sphagnicolous inhabitants, which only exceptionally can be found in other habitats. These are mostly the representatives of the genera Nebela (5 species), Sphenoderia (5), Lesquereusia (4), Longinebela (4), Padaungiella (4), Quadrulella (4), Heleopera (3) etc. The most numerous (67 species, 39%) are the species which are found in Sphagnum mosses but are also common inhabitants of freshwater basins. The genera Difflugia (28), Centropyxis (7) and Arcella (6) have the largest number of representatives in this group. Most likely, some of these species are not usual inhabitants and fall incidentally into the Sphagnum mosses, which develop around the shores of freshwater basins (e.g. Difflugia lobostoma, D.microclaviformis, D.urceolata, Netzelia tuberculata etc.). The relative share of species that are rather inhabitants of soils and soil mosses, but also occur in peatlands is comparatively smaller (about 18%, 31 species). Most of them rarely occur and usually have a low population density in Sphagnum mosses (e.g. Awerintzewia cyclostoma, Bullinularia indica, Centropyxis cryptostoma, Centropyxis orbicularis, Cyclopyxisarceloides, Cyclopyxis puteus, Heleoperasylvatica, Padaungiella wailesi, Plagiopyxis callida, Plagiopyxis labiata, Trinema galeata etc.). The number of eurybiotic species, which are widely distributed in diverse habitats, including peatlands, is the smallest. Twenty one species (about 12% of all recorded) can be referred to eurybionts. Of these, the most frequently occurring in Spagnum mosses are Centropyxis aerophila, Corythion dubium, Cyclopyxis eurystoma, Euglypha laevis, Phryganella acropodia, Trinema lineare etc.

On a generic level, the genera Difflugia (32), Centropyxis (17), Euglypha (13), Arcella (10) and Nebela (8) have the greatest species richness. These five genera constitute about 47% of all testate amoebae recorded in Sphagnum mosses in Bulgaria. Of the other genera, 23 are represented with 2-5 species and 15 with one species only.

From families, the largest richness have Difflugiidae (39 species, 4 genera), Hyalospheniidae (26, 7), Centropyxidae (17, 1), Euglyphidae (13, 1) and Arcellidae (10, 1), which together make up two thirds of Sphagnum-dwelling testate amoebae in Bulgaria. Six families are represented by one species of one genus only (Microcoyciidae, Microchlamyidae, Netzeliidae, Amphitremidae, Paulinellidae and Chlamydophryidae).

At a higher taxonomic level, the most numerous is the order Arcellinida, which includes 128 species of 28 genera and 11 families, followed by the order Euglyphida with 42 species of 14 genera and 8 families and finally by the order Amphitremida with one species of 1 genus and 1 family only.

Supplementary Material

Supplementary material 1

Checklist of Sphagum-dwelling testate amoebae from Bulgaria_Distribution data

Nikola Bankov, Milcho Todorov and Anna Ganeva

Data type: Distribution data

Brief description: Data for the distribution of testate amoebae in Sphagnum mosses in Bulgaria on the basis of literature and of additional data, obtained in our research over the past two years.

File: oo_193063.xlsx

bdj-06-e25295-s001.xlsx (364KB, xlsx)
Supplementary material 2

Sampling sites information

Nikola Bankov, Milcho Todorov and Anna Ganeva

Data type: Sampling sites data

Brief description: Data concerning sampling sites, including date, region, altitude, coordinates, Sphagnum moss species, as well as many physical and chemical parameters of the sampling sites.

File: oo_190421.xlsx

bdj-06-e25295-s002.xlsx (22.9KB, xlsx)

Acknowledgements

This work was supported by a grant from the Bulgarian Academy of Sciences, Program for career development of young scientists (grant DFNP-17-51/26.07.2017 to Nikola Bankov). The scanning electron microscope study was supported by the National Endowment Fund ”13 Centuries Bulgaria”. We thank the reviewer Prof. Edward Mitchell (University of Neuchatel) for his helpful and constructive comments and editorial suggestions, which enchanced the quality of the manuscript. The authors wish to acknowledge Nikola Dimitrov (Faculty of Chemistry and Pharmacy, Sofia University) for his help and advice with the scanning electron microscopy.

Funding Statement

This study was funded by the Bulgarian Academy of Sciences, Project DFNP-17-51/26.07.2017 (young scientists) to Nikola Bankov. The scanning electron microscope study was supported by the National Endowment Fund ”13 Centuries Bulgaria”.

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Associated Data

This section collects any data citations, data availability statements, or supplementary materials included in this article.

Supplementary Materials

Supplementary material 1

Checklist of Sphagum-dwelling testate amoebae from Bulgaria_Distribution data

Nikola Bankov, Milcho Todorov and Anna Ganeva

Data type: Distribution data

Brief description: Data for the distribution of testate amoebae in Sphagnum mosses in Bulgaria on the basis of literature and of additional data, obtained in our research over the past two years.

File: oo_193063.xlsx

bdj-06-e25295-s001.xlsx (364KB, xlsx)
Supplementary material 2

Sampling sites information

Nikola Bankov, Milcho Todorov and Anna Ganeva

Data type: Sampling sites data

Brief description: Data concerning sampling sites, including date, region, altitude, coordinates, Sphagnum moss species, as well as many physical and chemical parameters of the sampling sites.

File: oo_190421.xlsx

bdj-06-e25295-s002.xlsx (22.9KB, xlsx)

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