External images
Femorae 1 has posterior hairs extending almost to apex. Tarsae 1 and 2 are orange. Face has eye margins almost parallel from level of antennal insertions to the lower margin of facial prominence.
For unknown terms, see:
Morphology of Diptera. See references for
determination.[5][6][7][8][9][10]
Palearctic: Fennoscandia
south to Iberia and the Mediterranean basin, Ireland east through Europe into Turkey and European Russia and then from the Urals to central Siberia.
Nearctic: Alaska to Ontario and south to California.[11][12][13]
Biology
Habitat: grassland and fen, margins of ponds, streams, bogs and lakes, wet ditches and canals. It flies April to September.
[4]
^Stubbs, Alan E. & Falk, Steven J. (1983). British Hoverflies: An Illustrated Identification Guide. British Entomological & Natural History Society. pp. 253, xvpp.
^Van Veen, M. (2004) Hoverflies of Northwest Europe: identification keys to the Syrphidae. 256pp. KNNV Publishing, Utrecht.
addendum
^Van Veen, M. (2004). Hoverflies of Northwest Europe: identification keys to the Syrphidae. 256pp. KNNV Publishing, Utrecht.
addendum.
^Van der Goot, V.S. (1981). De zweefvliegen van Noordwest - Europa en Europees Rusland, in het bijzonder van de Benelux. KNNV, Uitgave no. 32: 275pp. Amsterdam.
^Bei-Bienko, G.Y. & Steyskal, G.C. (1988). Keys to the Insects of the European Part of the USSR, Volume V: Diptera and Siphonaptera, Part I. Amerind Publishing Co., New Delhi.
ISBN81-205-0080-6.
^Speight, M.C.D. & Goeldlin de Tiefenau, 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 Digest5: 5-18.
^Peck, L.V. (1988). "Syrphidae". In: Soos, A. & Papp, L. (eds.). Catalogue of Palaearctic Diptera8: 11-230. Akad. Kiado, Budapest.
^Vockeroth, J.R. (1992). The Flower Flies of the Subfamily Syrphinae of Canada, Alaska, and Greenland (Diptera: Syrphidae). Part 18. The Insects and Arachnids of Canada. Ottawa, Ontario: Canadian Government Pub Centre. pp. 1–456.
ISBN0-660-13830-1.