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The Rugilus Species of the Palaearctic and Oriental Regions (Coleoptera: Staphylinidae: Paederinae)

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The Rugilus Species of the Palaearctic and Oriental Regions (Coleoptera: Staphylinidae: Paederinae) Stuttgarter Beiträge zur Naturkunde A, Neue Serie 5: 115–190; Stuttgart, 30.IV.2012 115 The Rugilus species of the Palaearctic and Oriental regions (Coleoptera: Staphylinidae: Paederinae) VOLKER ASSING Abstract The East Palaearctic and Oriental species of the paederine genus Rugilus Leach, 1819 are revised, based on a study of types and additional material. In all, 85 valid species, at least one of them of doubtful status, are recognized in the Palaearctic and Oriental regions. They are attributed to two subgenera, 67 species to the nominate subgenus and 16 species to Eurystilicus Fagel, 1953; two species are of uncertain subgeneric affiliations and treated as incertae sedis. Numerous species are (re-)described and illustrated, 27 of them for the first time: Rugilus (Rugilus) aequabilis n. sp. (China: Yunnan), R. (R.) biformis n. sp. (China: Yunnan), R. (R.) confluens n. sp. (China: Sichuan, Yunnan), R. (R.) dabaicus n. sp. (China: Hubei), R. (R.) dalaoicus n. sp. (China: Hubei), R. (R.) daxuensis n. sp. (China: Sichuan), R. (R.) desectus n. sp. (China: Yunnan), R. (R.) emeiensis n. sp. (China: Sichuan), R. (R.) fodens n. sp. (China: Daba Shan), R. (R.) glabripennis n. sp. (China: Yunnan), R. (R.) gonggaicus n. sp. (China: Sichuan), R. (R.) kleebergi n. sp. (Nepal: Rolwaling), R. (R.) manasluensis n. sp. (Nepal: Manaslu), R. (R.) meilixuensis n. sp. (China: Yunnan), R. (R.) nuicus n. sp. (China: Yunnan), R. (R.) parvincisus n. sp. (China: Yunnan), R. (R.) pungens n. sp. (China: Yunnan), R. (R.) reticulatus n. sp. (China: Shaanxi, Henan), R. (R.) schuelkei n. sp. (China: Yunnan), R. (R.) truncatus n. sp. (Ne- pal: Everest range), R. (R.) wuyicus n. sp. (China: Jiangxi), R. (Eurystilicus) appendiculatus n. sp. (Malaysia: Sabah), R. (E.) bifidus n. sp. (Myanmar, China), R. (E.) bihamatus n. sp. (Philippines), R. (E.) brevior n. sp. (China: Sichuan), R. (E.) uncatus n. sp. (Thailand, Sri Lanka), and R. (?) lucens n. sp. (Nepal). Eleven synonymies are proposed: Rugi- lus Leach, 1819 = Tetragnathostilicus Scheerpeltz, 1976, n. syn.; Rugilus rufipes Germar, 1836 = R. pecticensisis (Coiffait, 1939), n. syn.; R. ceylanensis (Kraatz, 1859) = R. luteipennis (Kraatz, 1859), n. syn., = R. sutteri (Scheer- peltz, 1957), n. syn., = R. wittmeri (Coiffait, 1978), n. syn.; R. rufescens (Sharp, 1874) = R. kamchaticus Ryabukhin, 2007, n. syn.; R. japonicus Watanabe, 1961 = R. ferreirai (Scheerpeltz, 1978), n. syn.; R. ocularis (Fauvel, 1895) = R. kolbei (Bernhauer, 1915), n. syn., = R. triangulus Last, 1984, n. syn.; R. pygmaeus (Kraatz, 1859) = R. parvus (Cameron, 1931), n. syn.; Stilicoderus signatus Sharp, 1889 = Stilicus reitteri Bernhauer, 1938, n. syn. One valid species previously attributed to Rugilus is moved to the genus Stilicoderus Sharp, 1889: Stilicoderus melancholicus (Schubert, 1911), n. comb. Lectotypes are designated for Stilicus gracilis Eppelsheim, 1895, S. velutinus Fauvel, 1895, S. ocularis Fauvel, 1895, S. plagiatus Cameron, 1924, S. chinensis Bernhauer, 1938, and S. reitteri Bernhauer, 1938. A key to the Rugilus species of the East Palaearctic and Oriental regions and a catalogue of the species of the Palaearctic and Oriental regions are provided. A considerable number of species of the nominate subgenus is subject to pronounced sexual dimorphisms, wing dimorphisms, and biased sex ratios. Keywords: Staphylinidae, Paederinae, Stilicina, Rugilus, Stilicoderus, subgeneric assignment, new species, new synonymies, new combinations, lectotype designations, descriptions, key to species, catalogue, Palaearctic re- gion, Oriental region, sexual dimorphism, wing dimorphism, sex ratio. Zusammenfassung Die ostpaläarktischen und orientalischen Arten der Paederinengattung Rugilus Leach, 1819 werden auf der Grundlage einer Untersuchung von Typen und weiterem Material revidiert. Insgesamt umfasst die Rugilus-Fauna der Paläarktis und der Orientalis derzeit 85 valide Arten, davon mindestens eine mit zweifelhaftem Status. Die Ar- ten werden zwei Untergattungen zugeordnet: 67 Arten zu Rugilus s. str. und 16 Arten zu Eurystilicus Fagel, 1953. Die Untergattungszugehörigkeit von zwei Arten ist ungeklärt. Zahlreiche Arten werden beschrieben und abgebildet; davon sind 27 neu für die Wissenschaft: Rugilus (Rugilus) aequabilis n. sp. (China: Yunnan), R. (R.) biformis n. sp. (China: Yunnan), R. (R.) confluens n. sp. (China: Sichuan, Yunnan), R. (R.) dabaicus n. sp. (China: Hubei), R. (R.) dalaoicus n. sp. (China: Hubei), R. (R.) daxuensis n. sp. (China: Sichuan), R. (R.) desectus n. sp. (China: Yunnan), R. (R.) emeiensis n. sp. (China: Sichuan), R. (R.) fodens n. sp. (China: Daba Shan), R. (R.) glabripennis n. sp. (China: Yunnan), R. (R.) gonggaicus n. sp. (China: Sichuan), R. (R.) kleebergi n. sp. (Nepal: Rolwaling), R. (R.) manasluensis n. sp. (Nepal: Manaslu), R. (R.) meilixuensis n. sp. (China: Yunnan), R. (R.) nuicus n. sp. (China: Yunnan), R. (R.) parvincisus n. sp. (China: Yunnan), R. (R.) pungens n. sp. (China: Yunnan), R. (R.) reticulatus n. sp. (China: Shaanxi, Henan), R. (R.) schuelkei n. sp. (China: Yunnan), R. (R.) truncatus n. sp. (Nepal: Everest-Gebiet), R. (R.) wuyicus n. sp. (China: Jiangxi), R. (Eurystilicus) appendiculatus n. sp. (Malaysia: Sabah), R. (E.) bifidus n. sp. (Myanmar, China), R. (E.) bihamatus n. sp. (Philippinen), R. (E.) brevior n. sp. (China: Sichuan), R. (E.) uncatus n. sp. (Thailand, Sri Lanka), and R. (?) lucens n. sp. (Nepal). Elf Namen werden synonymisiert: Rugilus Leach, 1819 = Tetragna- thostilicus Scheerpeltz, 1976, n. syn.; Rugilus rufipes Germar, 1836 = R. pecticensisis (Coiffait, 1939), n. syn.; R. cey- 116 STUTTGARTER BEITRÄGE ZUR NATURKUNDE A Neue Serie 5 lanensis (Kraatz, 1859) = R. luteipennis (Kraatz, 1859), n. syn., = R. sutteri (Scheerpeltz, 1957), n. syn., = R. witt- meri (Coiffait, 1978), n. syn.; R. rufescens (Sharp, 1874) = R. kamchaticus Ryabukhin, 2007, n. syn.; R. japonicus Watanabe, 1961 = R. ferreirai (Scheerpeltz, 1978), n. syn.; R. ocularis (Fauvel, 1895) = R. kolbei (Bernhauer, 1915), n. syn., = R. triangulus Last, 1984, n. syn.; R. pygmaeus (Kraatz, 1859) = R. parvus (Cameron, 1931), n. syn.; Stili- coderus signatus Sharp, 1889 = Stilicus reitteri Bernhauer, 1938, n. syn. Eine bisher der Gattung Rugilus zugeordnete Art wird in die Gattung Stilicoderus Sharp, 1889 gestellt: Stilicoderus melancholicus (Schubert, 1911), n. comb. Für folgende Namen werden Lectotypen designiert: Stilicus gracilis Eppelsheim, 1895, S. velutinus Fauvel, 1895, S. ocu- laris Fauvel, 1895, S. plagiatus Cameron, 1924, S. chinensis Bernhauer, 1938, and S. reitteri Bernhauer, 1938. Eine Bestimmungstabelle der ostpaläarktischen und orientalischen Rugilus-Arten sowie ein Katalog der Rugilus-Fauna der Paläarktis und der Orientalis werden erstellt. Bei zahlreichen Arten der Untergattung Rugilus wurden bemerkenswerte Geschlechtsdimorphismen, Flügeldimorphismen und auffällige Geschlechterverhältnisse festgestellt. Contents 1 Introduction ........................................................................................................................................................... 116 2 Material and methods ............................................................................................................................................ 117 3 The Rugilus fauna of the Palaearctic and Oriental regions ................................................................................... 118 3.1 Diversity and distribution .............................................................................................................................. 118 3.2 Subgeneric classification ............................................................................................................................... 118 3.3 Sexual dimorphisms, wing dimorphisms, and sex ratios ............................................................................... 119 4 The species of Rugilus .......................................................................................................................................... 119 5 Key to the Rugilus species of the East Palaearctic and Oriental regions ..............................................................181 6 Catalogue of the Palaearctic and Oriental Rugilus species ...................................................................................185 7 Species excluded from Rugilus .............................................................................................................................185 8 References .............................................................................................................................................................188 1 Introduction in other zoogeographic regions, the nominate subgenus in the Palaearctic and Eurystilicus Fagel, 1953 in South Asia The speciose stilicine genus Rugilus Leach, 1819 cur- and Japan. One of the newly proposed names, Eustilicus rently includes more than 200 species worldwide (NEW- Fagel, 1953, is a primary homonym of Eustilicus Sharp, TON et al. 2001). The vast majority of these species was 1886 and was subsequently replaced with Fossulostilicus originally described in Stilicus Berthold, 1827, a junior (FAGEL 1963). FAGEL’s subgeneric classification has not synonym of Rugilus. In the Palaearctic region the genus been revised. was previously represented by approximately 60 described The Rugilus fauna of the West Palaearctic can be con- species in three subgenera (ASSING 2005, 2008, 2011; RY- sidered rather well-studied. Keys and redescriptions, in- ABUKHIN 2007; SMETANA 2004).
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