Cheilosia ( Montanocheila chrysocoma (Meigen, 1822)

Fig. 20

Syrphus chrysocomus Meigen, 1822: 280 .

Cheilosia chrysocoma – Gujabidze 2002: 246. — Mengual et al. 2020: 25.

Differential diagnosis

Cheilosia chrysocoma stands out amongst most other species of Cheilosia by usually having a furry, fox red body pile (Fig 20A, C). Within the subgenus Montanocheila the male can be identified by surstylus being ca five times as long as wide, with pointed tip (Fig. 20B, in the other species of Montanocheila occurring in the Caucasus, the surstylus is not longer than three times width). The female has the posterior margin of tergum V rounded (in the other species of Montanocheila occurring in the Caucasus the posterior margin of tergum V is more angulated).

Material examined

Species not collected.

Genetics

All DNA barcodes of C. chrysocoma from outside the Caucasus cluster together with a high support (BS = 99.1%).

Remarks

Gujabidze (2002) and Mengual et al. (2020) cite the records of this species from Mtskheta (Mtskheta-Mtianeti) included in an unpublished manuscript by Zaitsev; see references in Gujabidze (2002). The presence of this species in the Caucasus needs confirmation.

Distribution

Europe, European parts of Russia, and Siberia.