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Published: 2016-07-27

Redescription and lectotype designation of Chasmogenus abnormalis (Sharp), with notes on its distribution

Laboratory of Entomology, P.G. Department of Zoology, D. M. College of Science, Imphal-795001, Manipur, India
Laboratory of Entomology, P.G. Department of Zoology, D. M. College of Science, Imphal-795001, Manipur, India
National Museum, Department of Entomology, Cirkusova 1740, CZ-19300 Praha 9, Czech Republic Department of Zoology, Faculty of Science, Charles University in Prague, Viničná 7, CZ-12843 Praha 2, Czech Republic
Natural History Division, Kitakyushu Museum of Natural History and Human History, Higashida 2-4-1, Yahatahigashi-ku, Kitakyushu, Fukuoka, 805-0071 Japan
Laboratory of Entomology, P.G. Department of Zoology, D. M. College of Science, Imphal-795001, Manipur, India


Chasmogenus Sharp, 1882 is a relatively small genus of 43 described species of aquatic beetles assigned to the subfamily Acidocerinae of Hydrophilidae (Hansen 1999; Short & Hebauer 2006; Short & Fikáček 2011, 2013; Clarkson & Ferreira-Jr. 2014). It is distributed in all zoogeographic regions except the Nearctic, with the highest species richness known from the Afrotropical (18 spp.) and Neotropical (15 spp.) Regions. Only four species have been described from the Oriental Region: C. abnormalis (Sharp, 1890), C. rubricollis (Régimbart, 1903), C. larsi Hebauer, 1995, and C. cattienus Hebauer, 2002. Of these, only C. abnormalis was recorded multiple times after its description



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