Species of Bicellaria Macquart (Diptera: Hybotidae) of Europe, with descriptions of four new species Author Barták, Miroslav Author Kubík, Štěpán text Zootaxa 2013 3647 2 251 278 journal article 10.11646/zootaxa.3647.2.2 c49f48ba-b464-4b93-8269-40d6ed2fd447 1175-5326 224159 E917959A-ED11-47DA-ADAB-6D59F333705E Bicellaria mera Collin ( Figs 21–22 ) Bicellaria mera Collin, 1961: 258 . Type material examined. SYNTYPES : Great Britain : 1Ƥ, Upware Cambs, 12.vii.1875 ; 2Ƥ, Wicken, Cambs, 21.viii.1905 ; 13, same locality, 21.vi.1905 —all G.H. Verrall—(BMNH). Additional material examined (103, 2Ƥ). Czech Republic : 63, 2Ƥ, Čelákovice, lowland wood, 50°10'N , 14°49'E , 180 m , 10.ix.1991 (CULSP). Great Britain : 13, Wood Walton, Fen, Hunts, 16–18.vi.1923 , F.W. Edwards (BMNH). Slovak Republic : 13, Šamorín, near river, 6–10.vi.1977 (“ B. spuria ” det. Chvála); 13, Štůrovo, 2 km N, damp meadow, 47°49'N , 18°56'E , 110 m , 24.vii.1989 ; 13, Jurský Šur, deciduous wood, 48°15'N , 17°16'E , 130 m , 24.viii.1989 —all Barták—(CULSP). Diagnosis. Bicellaria mera is very similar to B. spuria . Both species may be identified in the male sex according to the hypandrial processes which are foot-like bent near apex in B. mera but straight and narrow in B. spuria ( Fig. 22 ). This character is sometimes poorly visible and requires dissection. Identification of females is difficult because two candidate characters from Collin’s description we tried to specify based on limited materials at hand (hind tibia at its broadest point usually narrower than 0.09 mm in B. mera but usually broader than 0.09 mm in B. spuria ; narrow apical part of third antennal segment mostly about as long as the first segment of stylus in B. mera , but twice as long in B. spuria ) proved to be variable. The only female character which appears constant is given in the key. Distribution. Temperate Central and Western Europe. Published record [omitted by Chvála (2012) and Yang (2007)]: Romania (Parvu 2005), record from Italy (Raffone 2006) is doubtful. Remarks. Described (alongside illustration of genitalia and hind leg) on the basis of unknown number of specimens taken in Wicken, Chippenham, Fens (Cambs) ( England ). Chvála (1983) redescribed this species and provided illustrations of the face, antenna, hind leg, and genitalia.