The O. Maculatus Species Group (Coleoptera: Elmidae) 197-238 ©Wiener Coleopterologenverein (WCV), Download Unter
ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Koleopterologische Rundschau Jahr/Year: 2015 Band/Volume: 85_2015 Autor(en)/Author(s): Kamite Yuuki Artikel/Article: Revision of the genus Optioservus SANDERSON, 1953, part 2: The O. maculatus species group (Coleoptera: Elmidae) 197-238 ©Wiener Coleopterologenverein (WCV), download unter www.biologiezentrum.at Koleopterologische Rundschau 85 197–238 Wien, September 2015 Revision of the genus Optioservus SANDERSON, 1953, part 2: The O. maculatus species group (Coleoptera: Elmidae) Y. KAMITE Abstract The Optioservus maculatus species group (Coleoptera: Elmidae) is newly proposed. Ten species, including six new species, are recognized: O. gapyeongensis JUNG, KAMITE & BAE, O. hagai NOMURA, O. inahatai sp.n., O. maculatus NOMURA, O. masakazui sp.n., O. occidens sp.n., O. ogatai sp.n., O. sakaii sp.n., O. variabilis NOMURA and O. yoshitomii sp.n. Larvae of nine species are also described: O. gapyeongensis JUNG, KAMITE & BAE, O. hagai NOMURA, O. maculatus NOMURA, O. masakazui sp.n., O. occidens sp.n., O. ogatai sp.n., O. sakaii sp.n., O. variabilis NOMURA and O. yoshitomii sp.n. Key words: Coleoptera, Elmidae, Optioservus, Optioservus maculatus species group, taxonomy, larvae. Introduction The Nearctic Optioservus fastiditus and O. quadrimaculatus species groups have already been revised by KAMITE (2013). The O. fastiditus species group includes six East Nearctic species and the O. quadrimaculatus species group includes seven West Nearctic species. At present, a total of six species of Optioservus SANDERSON, 1953 are known from the Palearctic Region: O. hagai NOMURA, 1958, O. maculatus NOMURA, 1958, O. nitidus NOMURA, 1958, O.
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