Winnertzia nigra Mamaev

Jaschhof, Mathias & Jaschhof, Catrin, 2020, Reevaluation of species richness in Winnertzia (Diptera, Cecidomyiidae, Winnertziinae), with descriptions of 37 new species from Sweden, Peru and Australia, Zootaxa 4829 (1), pp. 1-72 : 38

Winnertzia nigra Mamaev

Diagnosis. A large, blackish-brown Winnertzia with distinctive male genitalia ( Jaschhof & Jaschhof 2013: fig. 38C). The massive gonostylus is strongly bent apically, with the apical portion bearing (apart from ordinary setae) a small pectinate claw and dense, coarse microtrichia. Of the gonocoxal synsclerite, the ventral surface is conspicuously densely setose except for a non-setose portion basally, the ventral emargination is deeply V-shaped, and the dorsal apodemes are unusually short and thick. The tegmen, which is small in relation to the other genitalic structures, has small, sharply contoured flaps with fine microtrichia. The long, completely setose ninth tergite has the posterior edge slightly concave.

Distribution in Sweden. The only Swedish specimen known to us is a male collected in Småland, southern Sweden ( Jaschhof & Jaschhof 2013).