Cheilosia ( Pollinocheila ) semifasciata 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 : 132-133

publication ID	https://doi.org/10.5852/ejt.2025.1023.3097
publication LSID	lsid:zoobank.org:pub:70585BDD-5981-4967-A09C-543CE5D7C717
DOI	https://doi.org/10.5281/zenodo.17442685
persistent identifier	https://treatment.plazi.org/id/03F19912-AFD6-FF4A-FE2E-FE9EF8587A0E
treatment provided by	Plazi
scientific name	Cheilosia ( Pollinocheila ) semifasciata Becker, 1894
status

Treatment

Cheilosia ( Pollinocheila) semifasciata Becker, 1894 View in CoL

Fig. 67

Chilosia semifasciata Becker, 1894: 443 View in CoL .

Chilosia semifasciata View in CoL – Barkalov 1993: 699. — Barkalov & Mutin 2018: 486.

Differential diagnosis

Cheilosia semifasciata is characterized by the combination of bare face, bare eye, at least base of tibiae yellow, posterior margin of scutellum with setae and ventral and dorsal pile patches on katepisternum widely separated. Easily misidentified because of inconclusive pattern on Sterna II–IV, not being uniformly shiny nor pruinose: on anterior part distinctly pruinose, on posterior part usually shiny. Males can be distinguished from similar species by the distinct pruinose spots on the abdomen (two large grey pruinose spots on terga II–IV) and the females by the scutum with erect golden pile. For identification from similar but extralimital C. fasciata Schiner & Egger, 1853 , see Bot & Van de Meutter (2023).

Material examined

Not collected in 2018, but collected in 2019.

GEORGIA • 1 ♂, Samegrelo-Zemo Svaneti; 43.1166° N, 42.7276° E; 1850 m a.s.l.; 14 Jun. 2019; X. Mengual leg.; ZFMK, ZFMK-DIP-00066393 = ZFMK-TIS-8008774 GoogleMaps .

Genetics

COI sequences of C. semifasciata from Europe and Caucasus cluster together with high support (BS = 100%).

Remarks

Barkalov (1993) reported a single female of C. semifasciata collected in Lars, a small town in the Republic of North Ossetia-Alania. Thus, our record is the first for Georgia.

Distribution

Europe, Caucasus ( Georgia, Russia).