Table A1.
Systematic treatment and geographic distribution summary for Southern California Bight marine isopods (Crustacea: Isopoda). See annotated species list for details of geographic ranges. Distribution codes: BCN = Baja California Norte; BCS = Baja California Sur; CA = California; MX = Mexico; SCB = Southern California Bight; WW = worldwide (i.e., species also reported from regions beyond Eastern Pacific).
| Taxon | Eastern Pacific Distribution |
|---|---|
| Suborder Cymothoida | |
| Superfamily Anthuroidea | |
| Family Antheluridae | |
| Ananthuraluna (Schultz, 1966) | SCB |
| Family Anthuridae | |
| Amakusanthuracaliforniensis (Schultz, 1964) | SCB – Isla Guadalupe, BCN |
| Cyathuramunda Menzies, 1951 | Northern CA – Gulf of CA |
| Haliophasmageminatum Menzies & Barnard, 1959 | British Columbia – San Quintin Bay, BCN |
| Mesanthuraoccidentalis Menzies & Barnard, 1959 | SCB – Costa Rica |
| Family Expanathuridae | |
| Eisothistos sp. A | SCB |
| Family Hyssuridae | |
| Kupellonura sp. A | ~ 35 km north of SCB |
| Family Paranthuridae | |
| Califanthurasquamosissima (Menzies, 1951) | Northern CA – Oaxaca, MX |
| Colanthurabruscai Poore, 1984 | SCB – Costa Rica |
| Paranthuraelegans Menzies, 1951 | Northern CA – Costa Rica |
| Paranthurajaponica Richardson, 1909 | Northern CA – SCB (+ WW) |
| Superfamily Cymothooidea | |
| Family Aegidae | |
| Aegalecontii (Dana, 1854) | Central CA – SCB |
| Aegiochusplebeia (Hansen, 1897) | Aleutian Islands – Peru (+ West Pacific) |
| Rocinelaangustata Richardson, 1904 | Bering Sea – Gulf of CA |
| Rocinelabelliceps (Stimpson, 1864) | Alaska – Gulf of CA |
| Rocinelalaticauda Hansen, 1897 | Central CA – Acapulco, MX |
| Rocinelamurilloi Brusca & Iverson, 1985 | Central CA – Chile |
| Rocinelasignata Schioedte & Meinert, 1879 | Northern CA – Ecuador + Galapagos (+ WW) |
| Family Cirolanidae | |
| Cirolanadiminuta Menzies, 1962 | SCB – Gulf of CA + Galapagos |
| Cirolanaharfordi (Lockington, 1877) | British Columbia – Magdalena Bay, BCS |
| Eurydicecaudata Richardson, 1899 | SCB – Ecuador + Galapagos |
| Excirolanachiltoni (Richardson, 1905) | British Columbia – SCB (+ WW) |
| Excirolanalinguifrons (Richardson, 1899) | Oregon – SCB |
| Metacirolanajoanneae (Schultz, 1966) | British Columbia – SCB |
| Natatolanacaliforniensis (Schultz, 1966) | SCB – Peru-Chile Trench |
| Family Corallanidae | |
| Excorallanatricornisoccidentalis Richardson, 1905 | SCB – Panama |
| Excorallanatruncata (Richardson, 1899) | SCB – Galapagos |
| Family Cymothoidae | |
| Ceratothoagaudichaudii (H. Milne Edwards, 1840) | SCB – Cape Horn (+ SW Atlantic) |
| Ceratothoagilberti (Richardson, 1904) | SCB – Mazatlán, MX |
| Elthusacalifornica (Schioedte & Meinert, 1884) | Alaska – Peru |
| Elthusamenziesi (Brusca, 1981) | Coronado Islands, BCN – Gulf of CA |
| Elthusavulgaris (Stimpson, 1857) | Oregon – Columbia |
| Mothocyarosea Bruce, 1986 | SCB – Nicaragua |
| Nerocilaacuminata Schioedte & Meinert, 1881 | SCB – Peru |
| Renocilathresherorum Williams & Bunkley-Williams, 1980 | SCB – Gulf of CA (+ Egypt) |
| Smenispaconvexa (Richardson, 1905) | SCB |
| Family Gnathiidae | |
| Caecognathiacrenulatifrons (Monod, 1926) | British Columbia – BCN |
| Caecognathiasanctaecrucis (Schultz, 1972) | British Columbia – BCN |
| Caecognathia sp. A | SCB |
| Caecognathia sp. SD1 | SCB |
| Gnathiaclementensis Schultz, 1966 | SCB |
| Gnathiacoronadoensis Schultz, 1966 | SCB |
| Gnathiaproductatridens Menzies & Barnard, 1959 | SCB |
| Gnathiasteveni Menzies, 1962 | British Columbia – SCB |
| Gnathiatridens Menzies & Barnard, 1959 | British Columbia – SCB |
| Gnathiatrilobata Schultz, 1966 | British Columbia – SCB |
| Gnathia sp. MBC1 | SCB |
| Family Tridentellidae | |
| Tridentellaglutacantha Delaney & Brusca, 1985 | Central CA – SCB |
| Tridentellaquinicornis Delaney & Brusca, 1985 | SCB |
| Infraorder Epicaridea | |
| Superfamily Bopyroidea | |
| Family Bopyridae | |
| Anathelgeshyphalus (Markham, 1974) | Central CA – SCB |
| Aporobopyrusmuguensis Shiino, 1964 | Northern CA – Central Baja CA |
| Aporobopyrusoviformis Shiino, 1934 | SCB (+ Japan) |
| Argeiapugettensis Dana, 1853 | Bering Sea – SCB (+ Japan, Korea) |
| Asymmetrioneambodistorta Markham, 1985 | SCB |
| Bathygygegrandis Hansen, 1897 | SCB – MX (+ WW) |
| Bopyrellacalmani (Richardson, 1905) | Central CA – SCB |
| Capitetragonia sp. A | SCB |
| Eremitionegiardi (Calman, 1898) | Bering Sea – SCB |
| Leidyainfelix Markham, 2002 | SCB – San Quintin Bay, BCN |
| Munidionpleuroncodis Markham, 1975 | Central CA – Central MX |
| Orthionegriffenis Markham, 2004 | British Columbia – SCB (+ Asia) |
| Phyllodurusabdominalis Stimpson, 1857 | British Columbia – BCN |
| Progebiophilusbruscai Salazar-Vallejo & Leija-Tristán, 1990 | SCB – Nicaragua |
| Pseudionegalacanthae Hansen, 1897 | British Columbia – Gulf of CA |
| Schizobopyrinastriata (Nierstrasz & Brender à Brandis, 1929) | SCB – Gulf of CA |
| Family Ionidae | |
| Ionecornuta Spence Bate, 1863 | British Columbia – Gulf of CA (+ Asia) |
| Superfamily Cryptoniscoidea | |
| Family Dajidae | |
| Holophryxusalaskensis Richardson, 1905 | Alaska – SCB |
| Zonophryxus sp. | SCB |
| Family Hemioniscidae | |
| Hemioniscusbalani Buchholz, 1866 | British Columbia – MX (+ WW) |
| Suborder Limnoriidea | |
| Superfamily Limnorioidea | |
| Family Limnoriidae | |
| Limnoriaalgarum Menzies, 1957 | British Columbia – SCB |
| Limnoriaquadripunctata Holthuis, 1949 | Northern CA – SCB (+ WW) |
| Limnoriatripunctata Menzies, 1951 | Washington – Mazatlán, MX (+ WW) |
| Suborder Sphaeromatidea | |
| Superfamily Seroloidea | |
| Family Serolidae | |
| Heteroseroliscarinata (Lockington, 1877) | SCB – San Quintin Bay, BCN, + Gulf of CA |
| Superfamily Sphaeromatoidea | |
| Family Ancinidae | |
| Ancinusgranulatus Holmes & Gay, 1909 | SCB – Gulf of CA |
| Ancinusseticomvus Trask, 1971 | SCB – Mazatlán, MX |
| Bathycopeadaltonae (Menzies & Barnard, 1959) | Washington – SCB |
| Family Sphaeromatidae | |
| Discerceisgranulosa (Richardson, 1899) | SCB – Isla Cedros, BCN |
| Dynamenelladilatata (Richardson, 1899) † | Washington – SCB |
| Dynamenellaglabra (Richardson, 1899) † | Oregon – SCB |
| Dynamenellasheareri (Hatch, 1947) | Washington – SCB |
| Dynoideselegans (Boone, 1923) | SCB – Isla Cedros, BCN |
| Exosphaeromaamplicauda (Stimpson, 1857) ‡ | Northern CA |
| Exosphaeromaaphrodita Boone, 1923 | SCB |
| Exosphaeromainornata Dow, 1958 | Washington – SCB |
| Exosphaeromapentcheffi Wall, Bruce & Wetzer, 2015 | SCB |
| Exosphaeromarhomburum (Richardson, 1899) | Washington – SCB |
| Gnorimosphaeromanoblei Menzies, 1954 | Northern CA – SCB |
| Gnorimosphaeromaoregonense (Dana, 1853) ‡ | British Columbia – Central CA |
| Paracerceiscordata (Richardson, 1899) | Aleutian Islands – SCB |
| Paracerceisgilliana (Richardson, 1899) | Northern CA – SCB |
| Paracerceissculpta (Holmes, 1904) | Central CA – Gulf of CA (+ WW) |
| Paracerceis sp. A | SCB + Gulf of CA |
| Paradelladianae (Menzies, 1962) | SCB – Gulf of CA (+ WW) |
| Pseudosphaeroma sp. | Northern CA – SCB (+ WW) |
| Sphaeromaquoianum H. Milne Edwards, 1840 | Northern CA – SCB (+ WW) |
| Sphaeromawalkeri Stebbing, 1905 | SCB (+ WW) |
| Family Tecticipitidae | |
| Tecticepsconvexus Richardson, 1899 | Washington – SCB |
| Suborder Valvifera | |
| Family Arcturidae | |
| Idarcturusallelomorphus Menzies & Barnard, 1959 | Central CA – SCB |
| Idarcturushedgpethi Menzies, 1951 | British Columbia – SCB |
| Idarcturus sp. A | SCB |
| Neastacillacalifornica (Boone, 1918) | SCB – Gulf of CA |
| Family Holognathidae | |
| Cleantioidesoccidentalis (Richardson, 1899) | SCB – Gulf of CA, Ecuador + Galapagos |
| Family Idoteidae | |
| Colidoteafindleyi Brusca & Wallerstein, 1977 | SCB – Guadalupe Isla, BCN + Gulf of CA |
| Colidotearostrata (Benedict, 1898) | Oregon – SCB |
| Colidoteawallersteini Brusca, 1983 | SCB – Guadalupe Isla, BCN |
| Edotiasublittoralis Menzies & Barnard, 1959 | British Columbia – Gulf of CA + Costa Rica |
| Edotia sp. B | SCB |
| Erichsonellacrenulata Menzies, 1950 | SCB – San Quintin Bay, BCN |
| Eusymmeruspseudoculata (Boone, 1923) | SCB |
| Idoteafewkesi Richardson, 1905 | Alaska – BCS |
| Idoteametallica Bosc, 1801 | WW (pelagic), including SCB |
| Idotearufescens Fee, 1927 | Alaska – Baja CA |
| Idoteaurotoma Stimpson, 1864 | Alaska – Gulf of CA |
| Pentidoteaaculeata Stafford, 1913 | British Columbia – Gulf of CA |
| Pentidoteakirchanskii (Miller & Lee, 1970) | Oregon – SCB |
| Pentidoteamontereyensis Maloney, 1933 | Alaska – Baja CA |
| Pentidotearesecata (Stimpson, 1857) | Alaska – Gulf of CA |
| Pentidoteaschmitti (Menzies, 1950) | Bering Sea – SCB |
| Pentidoteastenops (Benedict, 1898) | Alaska – Gulf of CA |
| Pentidoteawosnesenskii (Brandt, 1851) | Aleutian Islands – Gulf of CA |
| Stenosomawetzerae (Ormsby, 1991) | SCB – Gulf of CA |
| Synidoteacalcarea Schultz, 1966 | SCB |
| Synidoteaharfordi Benedict, 1897 | Oregon – Costa Rica (+ Japan) |
| Synidoteamagnifica Menzies & Barnard, 1959 | Central CA – SCB |
| Synidoteamedia Iverson, 1972 | British Columbia – SCB |
| Family Thermoarcturidae | |
| Califarcturustannerensis (Schultz, 1966) | SCB |
| Suborder Asellota | |
| Superfamily Janiroidea | |
| Family Dendrotionidae | |
| Acanthomunnatannerensis Schultz, 1966 | SCB |
| Family Desmosomatidae | |
| Desmosoma sp. A | ~ 89 km north of SCB |
| Momedossasymmetrica (Schultz, 1966) | Northern CA – SCB |
| Prochelator sp. A | Northern CA to ~ 35 km north of SCB |
| Family Haplomunnidae | |
| Haplomunnacaeca (Richardson, 1905) | SCB |
| Family Janiridae | |
| Caecianiropsis sp. LA1 | SCB |
| Caecianiropsis sp. LA2 | SCB |
| Caecijaerahorvathi Menzies, 1951 | SCB (+ Hawaii) |
| Iaiscalifornica (Richardson, 1904) | Northern CA – SCB (+ WW) |
| Ianiropsisanaloga Menzies, 1952 | Washington – SCB |
| Ianiropsisderjugini Gurjanova, 1933 | Bering Sea – SCB (+ Korea) |
| Ianiropsiskincaidi Richardson, 1904 | Bering Sea – SCB |
| Ianiropsisminuta Menzies, 1952 | Northern CA – SCB |
| Ianiropsismontereyensis Menzies, 1952 | Northern CA – SCB |
| Ianiropsistridens Menzies, 1952 | British Columbia – Chile (+ Korea) |
| Janiralatadavisi Menzies, 1951 | Central CA – SCB |
| Janiralataoccidentalis (Walker, 1898) | British Columbia – SCB |
| Janiralatarajata Menzies, 1951 | Central CA – SCB |
| Janiralatasolasteri (Hatch, 1947) | Alaska – SCB |
| Janiralata sp. A | SCB |
| Janiralata sp. B | SCB |
| Janiralata sp. C | ~ 35 km north of SCB |
| Janiralata sp. D | ~ 35 km north of SCB |
| Family Joeropsididae | |
| Joeropsisconcava Schultz, 1966 | Central CA – SCB |
| Joeropsisdubiadubia Menzies, 1951 | British Columbia – Gulf of CA |
| Joeropsisdubiapaucispinis Menzies, 1951 | Northern CA – SCB |
| Joeropsislobata Richardson, 1899 | Oregon to SCB |
| Joeropsis sp. A | ~ 30 km north of SCB |
| Family Lepidocharontidae | |
| Microcharon sp. A | SCB |
| Family Munnidae | |
| Munnachromatocephala Menzies, 1952 | British Columbia – SCB |
| Munnafernaldi George & Strömberg, 1968 | Washington – SCB |
| Munnahalei Menzies, 1952 | Northern CA – SCB |
| Munnamagnifica Schultz, 1964 | SCB |
| Munnaspinifrons Menzies & Barnard, 1959 | SCB |
| Munnastephenseni Gurjanova, 1933 | Bering Sea – SCB (+ Japan) |
| Munna sp. A | SCB |
| Uromunnaubiquita (Menzies, 1952) | British Columbia – Gulf of CA |
| Family Munnopsidae | |
| Belonectes sp. A | SCB |
| Eurycopecaliforniensis Schultz, 1966 | SCB |
| Ilyarachnaacarina Menzies & Barnard, 1959 | Northern CA – SCB |
| Ilyarachnaprofunda Schultz, 1966 | Northern CA – SCB |
| Munnopsurus sp. A | SCB |
| Munnopsurus sp. B | SCB |
| Family Nannoniscidae | |
| Nannonisconuslatipleonus Schultz, 1966 | SCB |
| Family Paramunnidae | |
| Austrosignumlatum Just & Wilson, 2021 | SCB |
| Boreosignum sp. A | SCB |
| Munnogoniumerratum (Schultz, 1964) | Central CA – SCB |
| Munnogoniumtillerae (Menzies & Barnard, 1959) | SCB |
| Paramunnaquadratifrons Iverson & Wilson, 1981 | SCB |
| Paramunna sp. A | SCB |
| Paramunna sp. SD1 | SCB |
| Pleurogoniumcaliforniense Menzies, 1951 | British Columbia – SCB |
| Pleurogonium sp. A | SCB |
| Family Pleurocopidae | |
| Pleurocope sp. A | Central CA – SCB |
| Superfamily Stenetrioidea | |
| Family Stenetriidae | |
| Stenetrium sp. A | ~ 35 km north of SCB |
| Suborder Oniscidea | |
| Superfamily Oniscoidea | |
| Family Alloniscidae | |
| Alloniscusmirabilis (Stuxberg, 1875) | Northern CA – Magdalena Bay, BCS |
| Alloniscusperconvexus Dana, 1854 | British Columbia – Magdalena Bay, BCS |
| Family Detonidae | |
| Armadilloniscuscoronacapitalis Menzies, 1950 | Northern CA – SCB |
| Armadilloniscusholmesi Arcangeli, 1933 | British Columbia – Magdalena Bay, BCS |
| Armadilloniscuslindahli (Richardson, 1905) | Northern CA – SCB |
| Family Halophilosciidae | |
| Littorophilosciarichardsonae (Holmes & Gay, 1909) | British Columbia – Isla Cedros, BCN |
| Family Ligiidae | |
| Ligiacf.occidentalis (Dana, 1853) | SCB – BCS |
| Family Platyarthridae | |
| Niambiacapensis (Dollfus, 1895) | Washington – Chile (+ WW) |
| Family Tylidae | |
| Tylospunctatus Holmes & Gay, 1909 | SCB – Gulf of CA |
† Taxon inquirendum (genus uncertain for Dynamenelladilatata and D.glabra). ‡ No longer considered a SCB species (see Wall et al. 2015 for E.amplicauda, and Wetzer et al. 2021 for G. oregonense).