Cheilosia caerulescens is a Palearctic hoverfly.
Description A bluish-grey Cheilosia with dark legs and, sometimes, pale knees There are distinct dark shades, varying in extent over the two cross veins of the wings. The lower face is strongly protruding, the third antennal segment is brownish-red .It is bare-eyed. 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. (1988a) Keys to the Insects of the European Part of the USSR, Volume V: Diptera and Siphonaptera, Part I. Amerind Publishing Co., New Delhi. .Van Veen, M. (2004) Hoverflies of Northwest Europe: identification keys to the Syrphidae. 256pp. KNNV Publishing, Utrecht.addendumCoe, R.L. (1953) Diptera: Syrphidae. Handbks.ident.Br.insects, 10(1): 1-98. R.ent.Soc.London. pdf Fauna EuropaeaPeck, L.V. (1988) Syrphidae. In: Soos, A. & Papp, L. (eds.) Catalogue of Palaearctic Diptera, 8: 11-230. Akad.Kiado, Budapest.
Distribution and biology It is found from Britain and the Netherlands south to the Pyrenees and France east through Central Europe to European Russia and southeast to Yugoslavia and Roumania.Fauna Europaea The habitat is subalpine grassland and heath to above 2000m. where it flies from April to September, with peaks in May and August. The larvae feed internally on Sempervivum
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External links Images representing Cheilosia caerulescens