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. 2021 Apr 27;9:e63188. doi: 10.3897/BDJ.9.e63188

First record of the lace bug genus Eritingis (Drake and Ruhoff) (Hemiptera: Heteroptera: Tingidae) from Japan and Thailand

Jun Souma 1,2,✉
PMCID: PMC8096800  PMID: 33958947

Abstract

Background

The lace bug genus Eritingis Drake and Ruhoff, 1962 is widely distributed in the Australian and Oriental Regions, whereas only a single species, E. recentis (Drake and Poor, 1937), has been recorded from the Oriental Region. To date, E. recentis is known to occur in Indonesia, Malaysia, Papua New Guinea, Singapore and Vietnam, but has not been recorded from Japan and Thailand.

New information

Eritingis and E. recentis are recorded from Japan and Thailand for the first time.

Keywords: Heteroptera , Tingidae , Eritingis recentis, lace bug, new record, Japan, Thailand, eastern Asia, Oriental Region

Introduction

The lace bug genus Eritingis Drake and Ruhoff, 1962 (Hemiptera: Heteroptera: Tingidae) comprises 11 species from the Australian and Oriental Regions: E. agyiates Drake and Ruhoff, 1962, E. amoena Drake and Ruhoff, 1962, E. aporema Drake and Ruhoff, 1962, E. exalla Drake, 1961, E. hylaea Drake and Ruhoff, 1962, E. koebeli (Drake, 1944), E. nostratis (Drake, 1944), E. pacifica (Kirkaldy, 1908), E. recentis (Drake and Poor, 1937), E. trivirgata (Horváth, 1925) and E. violina Drake and Ruhoff, 1962 (Drake and Ruhoff 1965a). However, in the Oriental Region, only a single species, E. recentis, has been recorded from Malaysia, Singapore and Vietnam to date (Drake and Ruhoff 1965a, Drake and Ruhoff 1965b, Tomokuni 2008).

Recently, I observed a collection of Tingidae from eastern Asia and found an undetermined species of Eritingis in Japan and Thailand. After careful morphological examination, I concluded that this undetermined species represents E. recentis. In this study, I recorded E. recentis for the first time from Japan and Thailand.

Materials and methods

Dried specimens were used. Morphological characteristics of each specimen were observed under a stereomicroscope (SZ60, Olympus, Tokyo, Japan). Specimens were photographed using a digital microscope (Dino-Lite Premier M, Opto Science, Tokyo, Japan). Distribution records of species were mapped using SimpleMappr (Shorthouse 2010). Geographical coordinates were obtained from Google Map. The terminology used in this study generally follows that of Drake and Ruhoff (1965a) and Schuh and Weirauch (2020). All specimens used for this study were deposited at the Kyushu University Museum, Fukuoka, Japan (KUM).

Taxon treatments

Eritingis recentis

(Drake and Poor, 1937)

17A5860E-A6FA-53E8-A37B-081818CA57A4

Materials

  1. Type status: Other material. Occurrence: recordedBy: Shoichi Miyamoto; individualCount: 2; sex: female; lifeStage: adult; Taxon: scientificName: Eritingis recentis (Drake and Ruhoff, 1937); namePublishedIn: 1937; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Tingidae; genus: Eritingis; specificEpithet: recentis; scientificNameAuthorship: Drake and Poor; Location: islandGroup: Ryukyu Islands; island: Okinawa Honto Island; country: Japan; stateProvince: Okinawa; county: Kunigami-son; municipality: Yona; decimalLatitude: 26.75794048; decimalLongitude: 128.22516288; geodeticDatum: WGS84; Identification: identifiedBy: Jun Souma; dateIdentified: 2021; Event: samplingProtocol: none specified; eventDate: 22-05-1965; Record Level: institutionCode: KUM; basisOfRecord: PreservedSpecimen

  2. Type status: Other material. Occurrence: recordedBy: Yorio Miyatake; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eritingis recentis (Drake and Ruhoff, 1937); namePublishedIn: 1937; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Tingidae; genus: Eritingis; specificEpithet: recentis; scientificNameAuthorship: Drake and Poor; Location: continent: Eurasia; country: Thailand; stateProvince: Songkhla; county: Khao Noi; decimalLatitude: 7.22280430; decimalLongitude: 100.56143999; geodeticDatum: WGS84; Identification: identifiedBy: Jun Souma; dateIdentified: 2021; Event: samplingProtocol: none specified; eventDate: 22-06-1965; Record Level: institutionCode: KUM; basisOfRecord: PreservedSpecimen

  3. Type status: Other material. Occurrence: recordedBy: Yorio Miyatake; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Eritingis recentis (Drake and Ruhoff, 1937); namePublishedIn: 1937; kingdom: Animalia; phylum: Arthropoda; class: Insecta; order: Hemiptera; family: Tingidae; genus: Eritingis; specificEpithet: recentis; scientificNameAuthorship: Drake and Poor; Location: continent: Eurasia; country: Thailand; stateProvince: Songkhla; county: Songkhla; decimalLatitude: 7.19543333; decimalLongitude: 100.59582610; geodeticDatum: WGS84; Identification: identifiedBy: Jun Souma; dateIdentified: 2021; Event: samplingProtocol: none specified; eventDate: 23-06-1965; Record Level: institutionCode: KUM; basisOfRecord: PreservedSpecimen

Diagnosis

Eritingis recentis can be distinguished from other species of Eritingis based on a combination of the following characteristics: body length 3.0–3.2 mm, 3.3 times as long as maximum width across hemelytra (Fig. 1a–d); rostrum reaching anterior margin of metasternum (Fig. 2a); anterior margin of hood protruding anteriad in middle part (Fig. 2b); anterior margin of hemelytron nearly straight (Fig. 2c); costal area distinct, with a single row of areolae throughout its length; subcostal area with 1–2 rows of areolae in basal part and 2 rows in remaining parts; discoidal area with 5–6 rows of areolae at widest part; sutural area with 9 rows of areolae at widest part; and female terminalia pentagonal in ventral view (Fig. 2d).

Figure 1.

Figure 1.

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Habitus images of Eritingis recentis. A. female from Japan, dorsal view; B. female from Japan, lateral view; C. female from Thailand, dorsal view; D. female from Thailand, lateral view. Scale bar 1.0 mm.

Figure 2.

Figure 2.

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Detailed morphological images of Eritingis recentis. A. rostrum, ventral view; B. pronotum, dorsolateral view; C. hemelytron, dorsolateral view; D. female terminalia, ventral view. Scale bars 0.2 mm.

Distribution

Japan (Ryukyu Islands: Okinawa Honto Is.) (Fig. 3), Indonesia, Malaysia, Papua New Guinea, Singapore, Thailand, Vietnam (Drake and Ruhoff 1965a, Drake and Ruhoff 1965b, Tomokuni 2008, present study).

Figure 3.

Figure 3.

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Collection sites of Eritingis recentis in Japan and Thailand examined in present study.

The discovery of Eritingis recentis from Japan represents the northernmost distributional record of Eritingis species.

Biology

Adults have been collected in almost all seasons (Drake and Ruhoff 1965b, Tomokuni 2008, present study). The host plant for Eritingis recentis is unknown (Drake and Ruhoff 1965a, Tomokuni 2008).

Taxon discussion

The above recorded specimens match well with the photographs of the holotype (United States National Museum of Natural History 2021), illustrations (Drake and Ruhoff 1962, Drake and Ruhoff 1965b) and original description (Drake and Poor 1937a) of Eritingis recentis described from Singapore.

Eritingis recentis is highly similar to E. agyiates in general appearance. The latter is distinguished from the former by the body length 2.7 mm and the rostrum reaching the anterior margin of mesosternum.

Supplementary Material

XML Treatment for Eritingis recentis
BDJ.9.e63188-treatment1.xml (36.4KB, xml)

Acknowledgements

I express my sincere thanks to Dr. Marcus Guidoti (Departamento de Zoologia, Universidade Federal do Rio Grande do Sul, Porto Alegre-RS, Brazil) for his critical comments on the manuscript. I am grateful to Dr. Munetoshi Maruyama, Mrs. Junna Matsumoto (KUM), Dr. Satoshi Kamitani and Mr. Shunsuke Imada (the Entomological Laboratory, Faculty of Agriculture, Kyushu University, Fukuoka, Japan) for their great support in loaning and depositing the specimens. This work was partially supported by a Grant-in-Aid for JSPS Fellows (JP20J20483) to the author from the Japan Society for the Promotion of Science, Tokyo, Japan. I would like to thank Editage (www.editage.jp) for English language editing.

References

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  10. History United States National Museum of Natural. Perissonemia recentis Drake & Poor, 1937. Holotype. http://n2t.net/ark:/65665/359ca28b9-fd2c-4861-a6f2-31d93df09a21. [2021-01-11T00:00:00+02:00];

Associated Data

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

Supplementary Materials

XML Treatment for Eritingis recentis
BDJ.9.e63188-treatment1.xml (36.4KB, xml)

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