Cordylomyia barsovi Berest 1991

Cordylomyia barsovi Berest, 1991 —new junior synonym of Neurolyga fenestralis Rondani, 1840

Material studied: holotype male and paratype female, with the data as specified in the original description (Berest 1991a).

I could not determine any character that would differentiate the type specimens of C. barsovi from the redescription of N. fenestralis (Jaschhof 1998, Jaschhof & Jaschhof 2009), so I regard these two species as identical. The illustration of the male terminalia of C. barsovi (Berest 1991a: fig. 2.3) is incorrect in that the serrate projections arising from the posterior edges of the tegmen were omitted. Berest’s (1991a) differential diagnosis of C. barsovi makes reference to C. collaris Mamaev, 1963, but not to N. fenestralis, so she might simply have not considered the latter species. An adequate description of N. fenestralis, including illustrations of the male genitalia (Jaschhof 1998: fig. 69a–d), appeared only several years after the publication of C. barsovi.