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Cheilosia lasiopa Kowarz, 1885

Identification

Identification difficulty = 3. microscope_icon camera_icon_cross according to Ball & Morris, 20241

Synonymy

Cheilosia honesta Rondani, 1868 in Stubbs & Falk (1983)2.

Biology

The larva of this species remains unknown. Adults are often found visiting flowers such as Cow Parsley Anthriscus sylvestris in wooded localities, both deciduous and coniferous. Usually found in sheltered situations such as clearings and tracksides and often settles on sun-lit foliage.

Flight period

The following plots show the number of unique records per week excluding those reported to be of immature stages. Phenology plots for Cheilosia lasiopa

Distribution

Primarily occurs in southern England north to the Sefton coast and southern Yorkshire. Elsewhere there are very few, widely scattered records north to Inverness. There appear to be many more records from the east of its range. Distribution map for Cheilosia lasiopa

Trends

The following plots show the Frescalo TFactor vs year and a map of the rescaled frequency (all records) for the species.Trend plots for Cheilosia lasiopa

  1. Ball, S., & Morris, R. (2024). Hoverflies of Britain and Ireland. WILDGuides (3rd ed.). Oxford: Princeton University Press. ↩

  2. Stubbs, A., & Falk, S. (1983). British Hoverflies: An Illustrated Identification Guide (1st ed.). Reading: BENHS. ↩