Cheilosia ( Eucartosyrphus ) scutellata ( Fallén, 1817 )

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 : 130-131

Cheilosia ( Eucartosyrphus) scutellata ( Fallén, 1817)

Fig. 66

Eristalis scutellata Fallén, 1817: 55 .

Cheilosia scutellata – Stackelberg & Richter 1968: 248. — Stackelberg 1970: 58, — Peck 1988: 116. — Barkalov 1993: 712. — Gujabidze 2002: 245. — Barkalov & Mutin 2018: 485. — Mengual et al. 2020: 23.

Differential diagnosis

Cheilosia scutellata shares the following set of characters only with the very similar C. ruffipes : face and eye bare; arista long pilose (pile longer than width of arista at base) and facial tubercle broad, semicircular in dorsal view. It can always be separated from C. ruffipes by the bare posterodorsal corner of the anterior anepisternum (pilose in C. ruffipes ), and colour of the postpedicel ranging from dark orange to dark brown ( Fig. 66B, D) (bright orange in C. ruffipes ).

Material examined

Collected in 2018, 2019, 2021, 2022 and 2023; see Mengual et al. (2020) for detailed records from 2018.

Genetics

European and Caucasian DNA barcodes of C. scutellata group together in our NJ tree with high support (BS = 98.7%).

Biology

During our expeditions, collected between 12 May and 3 August at an altitude between 1090 and 2022 m a.s.l. Is often found in or near forest and feeds on umbellifer flowers.

Distribution

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