Coleoptera: Staphylinidae: Aleocharinae)

111 Description of Heterota sunjaei sp. nov. from Korean seashores and an annotated catalog of the littoral genus Heterota (Coleoptera: Staphylinidae: Aleocharinae)

Jong-Seok Park, Mi-Jeong Jeon, Kee-Jeong Ahn1 Department of Biology, Chungnam National University, Daejeon 305–764, Republic of Korea

Abstract—A new species, Heterota sunjaei Park and Ahn sp. nov. (type locality: Geumgab Beach, Jindo, Jeonnam Province, Korea), is described from Korea. The new species is compared with the related species H. plumbea (Waterhouse) and H. arenaria Cameron and the differences are summarized. An illustration of the habitus and line drawings of diagnostic characters are pre- sented. An annotated world catalog of the genus Heterota Mulsant and Rey is provided.

Résumé—Nous décrivons une nouvelle espèce coréenne, Heterota sunjaei Park et Ahn sp. nov. (localité type : Geumgab Beach, Jindo, Province de Jeonnam, Corée). Nous comparons la nouvelle espèce aux espèces apparentées H. plumbea (Waterhouse) et H. arenaria Cameron et nous résumons les différences. Nous illustrons l’habitus de l’espèce et donnons des dessins des carac- tères diagnostiques. Nous dressons enfin un catalogue mondial annoté du genre Heterota Mulsant et Rey.

[Traduit par la Rédaction]

Park118 et al. Introduction In this paper we describe a new species, Heterota sunjaei Park and Ahn, sp. nov., with an illustration of its habitus. We also provide The genus Heterota Mulsant and Rey (Cole- line drawings of its diagnostic characters and an optera: Staphylinidae: Aleocharinae) contains annotated taxonomic catalog of the species of nine species and is confined to seashores (Frank Heterota. and Thomas 1984). It is found in all geograph- Permanent microscopic slides were prepared ical regions except polar areas. Members of using the techniques described by Hanley and the genus Heterota are characterized by the Ashe (2003). Terminology for chaetotaxy and following features: body 2.0–5.0 mm long, microstructures follows Sawada (1972) and densely pubescent, microsculpture present; Ashe (1984). head narrower than pronotum; eyes large, somewhat prominent; antennae with 11 anten- Heterota sunjaei Park and Ahn, nomeres; labrum transverse and trapezoid, sp. nov. with rounded angles; galea longer than lacinia, distal lobe of galea membranous and pubes- (Figs. 1–7, 10, 11, 16, 17, 22, 24, 26) cent, maxillary palpomere 1 smallest, 2 as long as 3 and pubescent, 3 widest and pubescent, 4 Type series subuliform; mentum transverse and trapezoid, Holotype, labeled as follows: KOREA: Jeon- weakly emarginated apically; ligula narrow nam Prov., Jindo, Imhoe-myeon, Geumgab and long, not bifid; labial palpi with two arti- Beach, 22.viii.2001, K.-J. Ahn, J.-H. Ahn, cles; pronotum narrower than elytra; abdomen S.-J. Park, C.-W. Shin, M.-J. Jeon, ex under elongate and parallel-sided, impressed basally; wracks; Holotype, Heterota sunjaei Park and tarsal formula 4–4–5 (Fenyes 1920). Ahn, desig. J.-S. Park, 2007. Deposited in the

Received 28 March 2007. Accepted 30 August 2007.

1Corresponding author (e-mail: [email protected]).

Fig. 1. Heterota sunjaei. Holotype; 2.4 mm long. margin of elytra brown, tergites III–V brown, antennae dark brown and legs yellowish brown; densely pubescent with microsculpture present. HEAD. Narrower than pronotum; eye large and prominent, as long as tempora. Gular suture broadly separated. Carina on each side of middle of ventral head incomplete (incompletely at- taining the gular suture). Antennomeres (Fig. 7) 1–3 elongate, 4–7 rectangular, 8–10 subquadrate, 11 longer than wide. MOUTHPARTS. Mandible (Fig. 2) acute apically, denticles indis- tinct in ventral molar area, internal tooth present on right mandible. Labrum (Fig. 3) transverse and trapezoid; a-sensillum, b-sensillum, 6 small dull setae, and about 21 long setae present, a-sensillum long, b-sensillum short and acute apically; many pores present. Maxillary palpomere 1 smallest, 2 as long as 3 and pubescent, 3 widest and pubescent, 4 subulate. Labium (Fig. 5) with basal pores, medial setae adjacent to each other, pseudopores present in median and lateral area; ligula long and not forked, as long as labial palpi 1 and 2 combined. Labial palpi (Fig. 4) with two palpomeres; 10 setae (a–c, e–h, β–δ; see Sawada 1972) present, setae α and d absent; median pore, twin pore, and distal pore present. Mentum (Fig. 6) weakly emarginated apically, many setae and pores present. THORAX. Pronotum about 1.25 times wider than long; apical margin rounded, widest in the middle, pubescent; hypomera developed, entirely visible in lateral aspect. Pattern of pu- bescence with setae subparallel, all directed an- teriorly in a narrow median strip, others Chungnam National University Insect Col- directed anterolaterally to laterally in a swirling lection (Daejeon). Paratypes, 11: same data pattern (pattern E; Seevers 1978). Mesosternal as type (1%,1& on slide, sex of others unde- process narrow and longer than metasternal termined). process, mesocoxal cavities moderately separated. LEGS. Anterior tarsus with four articles; Diagnosis 1–3 subquadrate, 4 three times as long as 3. Heterota sunjaei Park and Ahn, sp. nov. can Middle tarsus with four articles; 1 longer than 2 be distinguished from Heterota plumbea (Wa- and 3 combined, 2 and 3 subquadrate, 4 three terhouse) and Heterota arenaria Cameron by times as long as 3. Posterior tarsus with five ar- the distinct median lobe and spermatheca (Ta- ticles; 1 two times as long as 2, 2–4 rectangu- ble 1, Figs. 22–27). The new species also dif- lar, 5 as long as 1. ELYTRA. About 1.5 times fers from H. arenaria and H. plumbea in the as long as wide, laterobasal margin emargin- shape of antennomeres 4–10 (Figs. 7–9) and of ated, distinct microsculpture present, pubescent. the posterior margin and the location of the ABDOMEN. Tergites III–VII transverse and setae on tergite VIII and sternite VIII impressed basally. Many pores present on basal (Figs. 10–21). part of sternite VII. Male tergite VIII (Fig. 10) broadly emarginated and several teeth present Description posteriorly, 4 pairs of long, thick setae present, Body length 2.0–2.5 mm. Body generally and pubescent. Posterior margin of female ter- dark brown, head and abdominal tergites V–VII gite VIII (Fig. 11) narrowly emarginated, 4 pairs black, apical region of elytral suture and lateral of long, thick setae present, and pubescent.

Figs. 2–6. Heterota sunjaei. 2, right mandible, ventral aspect; 3, labrum, dorsal aspect; 4, labial palpi, ventral aspect; 5, labium, ventral aspect; 6, mentum, ventral aspect (chaetotaxy system sensu Sawada 1972). Scale bars = 0.1 mm.

Male sternite VIII (Fig. 16) with 5 pairs of long, Etymology thick setae, and pubescent, posterior margin dis- The specific name sunjaei is conferred in tinctly prolonged. Female sternite (Fig. 17) with honor of Sun-Jae Park, who collected the new 3 pairs of long, thick setae, and pubescent, pos- species for the first time. terior margin weakly prolonged. Spermatheca as in Figure 22. Median lobe as in Figures 24 and 26. Remarks The new species is compared with the similar Distribution species H. plumbea and H. arenaria. See Ta- Korea. ble 1 for a comparison of these species.

Table 1. Comparison of Heterota sunjaei, H. arenaria, and H. plumbea. H. sunjaei H. arenaria H. plumbea Antenna Antennomeres 4–7 rect- Antennomeres 4–7 Antennomeres 4–7 angular and 8–10 subquadrate and 8–10 rectangular and 8–10 subquadrate (Fig. 7) weakly transverse (Fig. 8) subquadrate (Fig. 9) Male tergite VIII Posterior margin with Posterior margin with Posterior margin with several distinctive several distinct teeth several weak teeth teeth (Fig. 10) (Fig. 12) (Fig. 14) Female tergite VIII Figure 11 Figure 13 Figure 15 Male sternite VIII Posterior margin Posterior margin Posterior margin prolonged (Fig. 16) prolonged (Fig. 18) emarginated (Fig. 20) Female sternite VIII Figure 17 Figure 19 Figure 21 Spermatheca Figure 22 Figure 23 Figure f in Frank and Thomas (1984) Median lobe Figures 24 and 26 Figures 25 and 27 Figure e in Frank and Thomas (1984)

Figs. 7–9. Antenna, dorsal aspect. 7, Heterota bauer, 1895: 267 (genus description). Reitter, 1909: sunjaei;8,Heterota arenaria;9,Heterota plumbea. 81 (genus description). Fenyes, 1920: 110 (genus Scale bars = 0.1 mm. description). Portevin, 1929: 296 (key to Bolito- charini genera). Bernhauer and Scheerpeltz, 1926: 563 (catalog entry). Scheerpeltz, 1934: 1563 (catalog entry). Blackwelder, 1952: 186 (nomenclatorial history). Palm, 1968: 63 (genus diagnosis). Lohse, 1974: 34 (key to aleocharine genera). Frank and Thomas, 1984: 409 (historical review). Smetana, 2004: 428 (catalog entry for Palaearctic region).

Heterota arenaria Cameron, 1920

Heterota arenaria Cameron, 1920: 251 (original description, comparison with Heterota pictipennis (Fauvel)). Bernhauer and Scheer- peltz, 1926: 563 (catalog entry). Scheerpeltz, 1934: 1563 (catalog entry). Pace, 1993: 137 (comparison with Heterota rougemonti Pace).

Distribution Singapore.

Annotated taxonomic catalog of Heterota brevicollis (Bernhauer, Heterota species 1929)

Heterota Mulsant and Rey, 1874 Phytosus brevicollis Bernhauer, 1929: 187 (original description). Smetana, 2004: 428 Type species: Heterota plumbea (Waterhouse, (catalog entry for Palaearctic region). 1858), originally described in Homalota Mannerheim. Mulsant and Rey, 1874: 194 (proposed the Distribution genus name Heterota, genus description). Gangl- Yemen.

Figs. 10–15. Tergite VIII, dorsal aspect. 10, 12, 14, male; 11, 13, 15, female; 10, 11, Heterota sunjaei; 12, 13, Heterota arenaria; 14, 15, Heterota plumbea. Scale bars = 0.1 mm.

Figs. 16–21. Sternite VIII, ventral aspect. 16, 18, 20, male; 17, 19, 21, female; 16, 17, Heterota sunjaei; 18, 19, Heterota arenaria; 20, 21, Heterota plumbea. Scale bars = 0.1 mm.

Heterota gomyi Jarrige, 1973 Heterota obscura Cameron, 1938 Heterota gomyi Jarrige, 1973: 257 (original descrip- Heterota obscura Cameron, 1938: 174 (original tion, key to African Heterota species). Pace, 1992: description). Jarrige, 1973: 257 (key to Afri- 182 (key to African Heterota species, illustrated). can Heterota species, illustrated). Pace, 1992: 182 (key to African Heterota species).

Distribution Distribution Madagascar. Réunion.

Figs. 22–27. Spermatheca. 22, 23, dorsal aspect; 24–27, median lobe; 24, 25, lateral aspect; 26, 27, dorsal aspect; 22, Heterota sunjaei; 23, Heterota arenaria; 24, Heterota sunjaei; 25, Heterota arenaria; 26, Heterota sunjaei; 27, Heterota arenaria. Scale bars = 0.1 mm.

Heterota pamphylica Fagel, 1969 distribution, illustrated). Pace, 1993: 137 (comparison with H. rougemonti). Smetana, 2004: Heterota pamphylica Fagel, 1969: 123 (original 428 (catalog entry for Palaearctic region). description). Smetana, 2004: 428 (catalog entry for Palaearctic region). Distribution Yemen, Afrotropical region. Distribution Cyprus, Turkey. Heterota plumbea (Waterhouse, Heterota pictipennis (Fauvel, 1905) 1858) Alianta pictipennis Fauvel, 1905: 142 (original de- Homalota plumbea Waterhouse, 1858: 15 (origi- scription). Cameron, 1918: 183 (considered as nal description). Mulsant and Rey, 1874: 197 Heterota). Cameron, 1920: 251. Bernhauer and (considered as Heterota, description). Fowler, Scheerpeltz, 1926: 563 (catalog entry). Scheer- 1888: 64 (as member of genus Alianta peltz, 1934: 1563 (catalog entry). Pace, 1992: Thomson). Ganglbauer, 1895: 268 (diagnosis, 182 (key to African Heterota species, new catalog entry). Reitter, 1909: 82 (catalog entry).

Fenyes, 1920: 111 (catalog entry). Bernhauer Heterota vinsoni Cameron, 1947 and Scheerpeltz, 1926: 563 (catalog entry). Scheerpeltz, 1934: 1563 (catalog entry). Heterota vinsoni Cameron, 1947: 118 (original Portevin, 1929: 303 (diagnosis). Tottenham, description). Jarrige, 1973: 257 (key to Afri- 1949: 386. Palm, 1968: 63 (diagnosis). Lohse, can Heterota species, illustrated). Pace, 1992: 1974: 60 (diagnosis). Frank and Thomas, 182 (key to African species). 1984: 410 (description, illustrated). Smetana, 2004: 428 (catalog entry for Palaearctic Distribution region). Mauritius. Homalota fairmairei Brisout de Barneville, 1860: ccxviii (original description). Mulsant and Rey, 1874: 197 (synonym of H. plumbea). Acknowledgements Ganglbauer, 1895: 268 (synonym of H. plumbea). Reitter, 1909: 82 (synonym of H. plumbea). We are grateful to Dr. Alfred F. Newton (Field Fenyes, 1920: 111 (synonym of H. plumbea). Museum of Natural History, Chicago), Dr. Bernhauer and Scheerpeltz, 1926: 563 (synonym Didier Drugmand (Institut royal des Sciences of H. plumbea). Smetana, 2004: 428 (synonym naturelles de Belgique, Brussels), Dr. Johannes of H. plumbea). Frisch (Museum für Naturkunde der Humboldt- Homalota godelinaisi Fauvel, 1862: 92 (origi- Universität zu Berlin, Berlin), and Dr. Lee nal description). Ganglbauer, 1895: 268 (syn- Herman (American Museum of Natural History, onym of H. plumbea). Mulsant and Rey, New York) for lending precious specimens. We 1874: 197 (synonym of H. plumbea). Reitter, also thank Dr. Vladimir Gusarov (Natural His- 1909: 82 (synonym of H. plumbea). Fenyes, tory Museum, Oslo) and Dr. Christopher E. 1920: 111 (synonym of H. plumbea). Carlton (Louisiana State University, Louisiana) Bernhauer and Scheerpeltz, 1926: 563 (syn- for providing old literature references. The onym of H. plumbea). Smetana, 2004: 428 work was supported by the Korean Science and (synonym of H. plumbea). Engineering Foundation (grant KOSEF R01– Thinoecia impressa Mulsant and Rey, 1875: 459 2007–000–10561–0) to K.-J. Ahn. (original description). Fenyes, 1920: 111 (synonym of H. plumbea). Bernhauer and Scheer- peltz, 1926: 563 (synonym of H. plumbea). References Smetana, 2004: 428 (synonym of H. plumbea). Ashe, J.S. 1984. Generic revision of the subtribe Homalota trogophloeoides Wollaston, 1864: Gyrophaenina (Coleoptera: Staphylinidae: 536 (original description). Ganglbauer, 1895: Aleocharinae) with a review of the described sub- 268 (synonym of H. plumbea). Reitter, 1909: genera and major features of evolution. 82 (synonym of H. plumbea). Fenyes, 1920: Quaestiones Entomologicae, 20: 129–349. 111 (synonym of H. plumbea). Bernhauer Bernhauer, M. 1929. Neue Kurzflügler des paläarktis- and Scheerpeltz, 1926: 563 (synonym of chen Gebietes. Koleopterologische Rundschau, 14: H. plumbea). Smetana, 2004: 428 (synonym 177–195. Bernhauer, M., and Scheerpeltz, O. 1926. Staphy- of H. plumbea). linidae. VI. In Coleopterorum Catalogus. Volume 5. Staphylinidae. Edited by W. Junk and S. Schen- Distribution kling. W. Junk, Berlin, Germany. Europe, North Africa, Nearctic region, Neo- Blackwelder, R.E. 1952. The generic names of the tropical region. beetle family Staphylinidae with an essay on genotypy. United States National Museum Bulle- tin No. 200. Heterota rougemonti Pace, 1993 Brisout de Barneville, C. 1860. [new taxa]. Bulletin de la Société Entomologique de France, 1859: ccxvii-ccxix. Heterota rougemonti Pace, 1993: 137 (original Cameron, M. 1918. New Oriental Staphylinidae. En- description based on female, comparison tomologist’s Monthly Magazine, 54: 183–184. with H. pictipennis and H. arenaria, illus- Cameron, M. 1920. New species of Staphylinidae trated). from Singapore. Part III. The Transactions of the Entomological Society of London, 1920: 212–284. Cameron, M. 1938. New species of Staphylinidae from Distribution Mauritius and Réunion, collected by Mr. J. Vinson. Bali. Entomologist’s Monthly Magazine, 74: 173–175.

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