Published October 21, 2025 | Version v1

Cheilosia (Pollinocheila) semifasciata Becker 1894

  • 1. Gasterenseweg 1, 9467 TA Anloo, the Netherlands.
  • 2. Museum Koenig Bonn, Leibniz-Institut zur Analyse des Biodiversitätswandels, Adenauerallee 127, 53113 Bonn, Germany.
  • 3. Achterheide 16, 3980 Tessenderlo, Belgium. & Frank.
  • 4. 146 Monty Drive, Ottawa, ON, K 0 A 3 M 0, Canada.

Description

Cheilosia (Pollinocheila) semifasciata Becker, 1894

Fig. 67

Chilosia semifasciata Becker, 1894: 443.

Chilosia semifasciata – 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.

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).

Notes

Published as part of 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, pp. 1-181 in European Journal of Taxonomy 1023 on pages 132-133, DOI: 10.5852/ejt.2025.1023.3097, http://zenodo.org/record/17442595

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Linked records

Additional details

Biodiversity

Collection code
ZFMK
Material sample ID
ZFMK-DIP-00066393, ZFMK-TIS-8008774
Event date
2019-06-14
Verbatim event date
2019-06-14
Scientific name authorship
Becker
Kingdom
Animalia
Phylum
Arthropoda
Order
Diptera
Family
Syrphidae
Genus
Cheilosia
Species
semifasciata
Taxon rank
species
Taxonomic concept label
Cheilosia (Pollinocheila) semifasciata Becker, 1894 sec. Bot, Mengual, Meutter & Skevington, 2025

References

  • Becker T. 1894. Revision der Gattung Chilosia Meigen. Nova Acta Academiae Caesareae Leopoldino- Carolinae Germanicae Naturae Curiosorum 62 (3): 195-524. https://doi.org/10.5962/bhl.title.10472
  • Barkalov A. V. 1993. Hover flies of the genus Cheilosia Meigen, 1822 (Diptera, Syrphidae) of the Caucasus. Entomologicheskoe Obozrenie 72 (3): 698 - 727. [in Russian; English version published in: Barkalov A. V. 1994. Hover flies of the genus Cheilosia Meigen, 1822 (Diptera, Syrphidae). Entomological Review 73 (5): 28-58.]
  • Barkalov A. V. & Mutin V. 2018. Checklist of the hover-flies (Diptera, Syrphidae) of Russia. Euroasian Entomological Journal 17 (6): 466-510. https://doi.org/10.15298/euroasentj.17.6.12
  • Bot S. & Van de Meutter F. 2023. Hoverflies of Britain and North-west Europe. Bloomsbury publishing Plc, London.