Wiedemannia shamshevi Kustov & Zherebilo

Kustov, Semen & Zherebilo, Danil, 2015, New data on the genus Wiedemannia Zetterstedt (Diptera: Empididae) from the Caucasus with description of four new species, Zootaxa 4032 (4), pp. 351-369 : 365

Wiedemannia shamshevi Kustov & Zherebilo

( Fig. 14 )

Wiedemannia shamshevi Kustov & Zherebilo, 2014: 166 .

Material examined. GEORGIA: Lechkhumi ridge (41), 29.iv.2014, D. Zherebilo (1 ♂, 1 ♀); Khevsureti (47), 19.vii.2014, D. Zherebilo (32 ♂, 54 ♀); same locality, western slope of Chokismta-Matura (49), 23.vii.2014, D. Zherebilo (41 ♂, 67 ♀). SOUTH OSSETIA: Gudissky ridge (44), 21.vii.2013, D. Zherebilo (6 ♂, 6 ♀).

Diagnosis. This species is distinguished by the weak ocellar bristles, nearly twice shorter than postpronotal bristles, scutum brown with blue pruinescence on postpronotal lobe and notopleuron, acrostichals extending to third dorsocentral seta, 5 pairs of dorsocentrals without intermediate setae interspersed among primary setae, fore femur without strong bristles apically; terminalia large, clasping cercus long and unilobed, projecting perpendicular to epandrium.

Distribution. PALAEARCTIC: Caucasus: Georgia, South Ossetia.

Remarks. This high-mountain species is active from April to July, and is common in high-altitude streams and rivers (2500–3000 m a.s.l.), but is known from lower elevations (770 m a.s.l) in early spring.

Figures

FIGURES 12 – 17. Male terminalia of Wiedemannia, lateral view. 12, W. pseguashae sp. nov.; 13, W. pseudovaillanti Joost; 14, W. shamshevi Kustov & Zherebilo; 15, W. sinclairi Kustov & Zherebilo; 16, W. vaillanti Joost; 17, W. zetterstedti (Fallén). Scale bar = 0.1 mm.