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Cheilosia nebulosa Verrall, 1871

Identification

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

Biology

The larva of this species is unknown. Adults visit flowers such as Salix catkins along woodland rides and edges, often near carr or marshes. Males hover high up beside flowering sallows Salix sp. or Hawthorn Crataegus sp. bushes.

Flight period

The following plots show the number of unique records per week that were not reported to be of eggs, larvae or pupae. phenology

Status

Lower Risk (Nationally scarce) - Ball & Morris, 20142. Rare (RDB3) - Falk, 19913 and Shirt, 19874.

Distribution

Very widely distributed but records are extremely scattered. Numbers drop towards the Scottish borders and there are just two records immediately north of Edinburgh. dotmap

Trends

The following plots show the Frescalo TFactor vs year and a map of the rescaled frequency (all records) for the species. For an explanation see here. trend

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

  2. Ball, S., & Morris, R. (2014). A review of the scarce and threatened flies of Great Britain. Part 6: Syrphidae. ( No. 9). Species status (pp. 1–130). Peterborough: JNCC. ↩

  3. Falk, S. (1991). A review of the scarce and threatened flies of Great Britain. ( No. 39). Research and Survey in Nature Conservation (pp. 1–194). Peterborough: NCC. ↩

  4. Shirt, D. (Ed.). (1987). Red Data Books: 2. Insects. Peterborough: NCC. ↩