Cheilosia ( Convocheila ) laticornis Rondani, 1857

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 : 78

Cheilosia ( Convocheila) laticornis Rondani, 1857

Fig. 39

Cheilosia laticornis Rondani, 1857: 160 .

Cheilosia latifacies Loew, 1858: 593 . Syn. by Claussen & Thompson (1996).

Cheilosia latifacies – Stackelberg & Richter 1968: 246. — Stackelberg 1970: 58. — Peck 1988: 107. — Barkalov 1993: 712.

Cheilosia latifacies Loew, 1846 [sic] – Gujabidze 2002: 246.

Cheilosia laticornis – Barkalov & Mutin 2018: 484. — Mengual et al. 2020: 22. — Speight 2020a: 39.

Differential diagnosis

Cheilosia laticornis belongs to the subgenus Convocheila . One of the distinctive characters of the subgenus is the pilosity on the face: long pilose along parafacia in dorsal one third of face. In the males of Convocheila the ventral lobe of the postgonite is sickle-shaped (the male genitalia of C. laticornis are figured in Radenković et al. 2020). Within the Caucasus, the only other member of the subgenus Convocheila is C. cumanica . The male of C. laticornis can be easily distinguished from that of C. cumanica by the bare eye (eye pilose in C. cumanica ), the female has the occiput with long white pile only (besides white pile, also with few long black pile in C. cumanica ) and scutellum on posterior margin with weak yellow setae (with robust black setae in C. cumanica ).

Material examined

Species not collected.

Genetics

The DNA barcodes of C. laticornis from Europe cluster together with high support (BS = 100%).

Remarks

The name Cheilosia latifacies Loew usually appears in the literature as published in 1857. Claussen & Thompson (1996) explain the evidence to date this work in 1858 and, consequently, argue the precedence of C. laticornis Rondani as a senior synonym.

Distribution

Western and Central Europe, Caucasus ( Armenia, Azerbaijan).