Previous Post Next Post

Platycheirus occultus Goeldlin de Tiefenau, Maibach & Speight, 1990

Identification

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

Synonymy

One of the species split from P. clypeatus by Speight & Goeldlin (1990)2 and Goeldlin et al. (1990)3.

Biology

Larva unknown. It is found in peaty wetlands including acid bog and moorland in the north and west; calcareous fen in eastern England; and wet heathland in southern-central England. Adults fly low down amongst lush vegetation and are usually found by sweeping, but also visit flowers.

Flight period

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

Distribution

This is a very widely distributed species with no obvious distribution features. Distribution map for Platycheirus occultus

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 Platycheirus occultus

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

  2. Speight, M., & Goeldlin de Tiefanau, P. (1990). Keys to distinguish Platycheirus angustipes, P. europaeus, P. occultus and P. ramsarensis (Dipt., Syrphidae) from other clypeatus group species known in Europe. Dipterists Digest (first series), 5, 5–18. ↩

  3. Goeldlin de Tiefanau, ., Maibach, A., & Speight, M. (1990). Sur quelques espèces de Platycheirus (Diptera, Syrphidae) nouvelles ou méconnues. Dipterists Digest (first series), 5, 19–43. ↩