Cheilosia ( Cheilosia ) brunnipennis Becker, 1894

Bot, Sander, Mengual, Ximo, Meutter, Frank Van de & Skevington, Jeffrey H., 2025, Review of the genus Cheilosia Meigen, 1822 (Diptera: Syrphidae) from the Caucasus, with the description of 14 new species, European Journal of Taxonomy 1023, pp. 1-181 : 35-37

Cheilosia ( Cheilosia) brunnipennis Becker, 1894

Fig. 16

Chilosia brunnipennis Becker, 1894: 417 .

Chilosia sareptana Becker, 1894: 418 . Syn. by Vujić (1996).

Chilosia brunnipennis – Barkalov & Mutin 2018: 482. — Mengual et al. 2020: 15.

Chilosia sareptana – Stackelberg & Richter 1968: 248. — Stackelberg 1970: 61. — Peck 1988: 116. — Barkalov 1993: 718.

Differential diagnosis

Cheilosia brunnipennis is similar to C. flavipes , C. megaclama sp. nov., and C. nebulosa , sharing a pilose eye (but eye bare in female C. flavipes and female C. megaclama ), bare face, lack of setae on posterior margin of scutellum, bicoloured legs and dorsal and ventral pile patches on katepisternum widely separated. The male C. brunnipennis can immediately be identified from all three by the long postpedicel ( Fig. 16B), ca two times as wide as high (rounded in the other three species). Moreover, the male of C. brunnipennis has basal three or four tarsomeres of protarsus yellow ( Fig. 16C) (protarsus dorsally black in C. megaclama ), arista black (at least the base extensively orange in C. nebulosa ), and frons swollen (not swollen in C. flavipes ). In the female the eye is pilose (bare in C. flavipes and C. megaclama ), arista black (at least the base extensively orange in C. nebulosa ), postpedicel large and parafacia wide (postpedicel small and parafacia narrow in C. nebulosa ).

Material examined

Not collected in 2018, but collected in 2023.

GEORGIA – Mtskheta-Mtianeti • 1 ♀; Tbilisi N.P. ; 41.877° N, 45.0138° E; 1250 m a.s.l.; 4 May 2023; F. Van de Meutter leg.; FMT, ZFMK-TIS-8027947 . – Samtskhe-Javakheti • 1 ♀; Borjomi ; 41.8098° N, 43.3327° E; 850 m a.s.l.; 12 May 2023; W. Opdekamp leg.; WOR, A001 = ZFMK-TIS-8028456 .

Genetics

DNA barcodes of this species are recovered into a cluster with high support (BS = 100%).

Biology

During our expeditions, collected between 4 May and 12 May at an altitude between 850 and 1250 m a.s.l., visiting Ranunculus sp. and Salix sp.

Distribution

Western Palaearctic. Within the Caucasus known from Armenia, Georgia and Russia.