Katatopygia gen. n., a monophyletic branch segregated from Boletina (Diptera, Mycetophilidae) Author Martinsson, Svante Author Kjaerandsen, Jostein text ZooKeys 2012 175 37 67 http://dx.doi.org/10.3897/zookeys.175.2388 journal article http://dx.doi.org/10.3897/zookeys.175.2388 1313-2970-175-37 Katatopygia hissarica (Zaitzev & Polevoi, 2002) comb. n. Boletina hissarica Zaitzev & Polevoi, 2002: 640 (figs 1, 3 & 9) Diagnostic characters .Very similar to Katatopygia erythropyga , from which it can be separated only on details of the male terminalia. Zaitzev & Polevoi (2002) used four key characters to distinguish them: 1) Apical process of the gonostylus slightly bolder and with more developed unsclerotized area around base of this process; 2) Dentations on the inner surface of gonostylus being restricted to distal part, not reaching the curve basally; 3) Apical part of tergite IX less sclerotized; 4) Details of aedeagus as figured by them. Distribution. The species is known only from the holotype from Tadzhikistan. Remarks. The species limit between Katatopygia erythropyga and Katatopygia hissarica seems vague, and it is possibly that Katatopygia hissarica will fall inside the variation of Katatopygia erythropyga when a wider range of material is studied. Type material. The holotype is deposited in the Zoological Institute in St. Petersburg, Russia - not studied.