Cheilosia nebulosa is a Palearctic species of hoverfly.
Description External images For terms see Morphology of Diptera Wing length 6-8·5 mm. Face with conspicuous central knob. Legs partly yellow or orange. Scutellum without margin bristles. Wing with central cross veins darkened and with dusky clouds on anterior part. Antennae with third segment rounded and pale with dark tip.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. .Coe, R.L. (1953) Diptera: Syrphidae. Handbks.ident.Br.insects, 10(1): 1-98. R.ent.Soc.London. pdf
Distribution Present in most of Europe and the western Palearctic realm east to the Urals.Fauna europaeaPeck, L.V. (1988) Syrphidae. In: Soos, A. & Papp, L. (eds.) Catalogue of Palaearctic Diptera, 8: 11-230. Akad.Kiado, Budapest.
Biology Habitat Wetlands, woodlands, Alnus and Salix carr and poorly drained scrub (Prunus spinosa). Flowers visited include Crataegus, Prunus, Salix, Taraxacum and Tussilago. Flies from the end of April to beginning June (later at higher altitudes).de Buck, N. (1990) Bloembezoek en bestuivingsecologie van Zweefvliegen (Diptera, Syrphidae) in het bijzonder voor België. Doc.Trav. IRSNB, no.60, 1-167.
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