Dasyhelea bilobata Kieffer

Dominiak, Patrycja & Szadziewski, Ryszard, 2010, Distribution and new synonymy in European biting midges of the genus Dasyhelea Kieffer (Diptera: Ceratopogonidae), Zootaxa 2437, pp. 1-37 : 8-9

Dasyhelea bilobata Kieffer

Dasyhelea bilobata Kieffer, 1915: 65 (male, France); Goetghebuer 1934a: 27 (male).

Prokempia bilobata: Kieffer 1925c: 71 (combination, male).

Dasyhelea luteiventris Goetghebuer, 1934a: 90 (female, Austria); Szadziewski 1986: 49 (female, syn.: = spiralis , Poland); Delécolle et al. 1991: 256 ( France); Hagan et al. 2000: 471 ( Norway); Delécolle 2002: 28 (syn.: = spiralis , Andorra); Dominiak & Szadziewski 2006: 6 ( Poland, breeding site – peat-bog); Knoz et al. 2004: 84 ( Czech Republic); Chandler et al. 2008: 87 (male, Great Britain). Syn. nov.

Dasyhelea spiralis Remm, 1966: 60 (male, female; Lithuania, Estonia, Russia: Leningrad Oblast); Remm 1967: 21 ( Georgia); Havelka 1976a: 76 ( Germany); Havelka 1976b: 227 (male); Remm 1979: 50 ( Estonia); Przhiboro 1999: 133 ( Russia: Karelia, breeding site – littoral zone of lake); Przhiboro 2005: 167 ( Russia: Karelia, breeding site – water margin zone in lake). Syn. nov.

Distribution. Great Britain, Norway, Estonia, Russia (Karelia, Leningrad Oblast), Lithuania, Poland, Germany, Czech Republic, Austria, France, Andorra, Georgia.

Discussion. Dasyhelea bilobata is a very distinctive species with uniquely bilobed gonostyli and very long apicolateral processes on tergite nine. These diagnostic features mentioned in Kieffer‘s original description (1915) and subsequently presented in a illustration (1925c), indicates that D. luteiventris is a new junior synonym of D. bilobata . This species is a European faunal element. Immature stages are found in peatbogs and the littoral zone of lakes, and in mosses or liverworts that blanket rocks along lake margins.