Cheilosia bergenstammi is a widespread European species of hoverfly. Adults can be found in summer visiting ragwortflowers and this plant is also the larval hostplant.[1]
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For terms see Morphology of Diptera
A moderately large (wing length 7·25-9 25 mm.), rather broadly-built brown species (abdomen elongate in males oval in females). Third segment of the antennae entirely reddish.
Hind tibia 3 pale with black ring. Part of the Cheilosia bergenstammispecies group and difficult to determine.[2][3][4][5] The larva is figured by Smith (1979) [6]
Distribution
Scandinavia South to the Pyrenees and North Spain. Ireland east through central Europe to European Russia.[7][8]
Biology
Habitat:open, grassy areas in coniferous and deciduous forest, eutrophic dune grassland; unimproved alpine pasture (the normal larval food-plant of Senecio jacobaea, is systematically removed from grassland grazed by cows and horses), edges of clearings, tracks and fields. Flowers visited include Allium, Caltha, Geranium, Hieracium, Primula, Ranunculus, Senecio, Taraxacum, umbellifers. The flight period is April to June and middle July to September.[9][10]
↑Van Veen, M. (2004) Hoverflies of Northwest Europe: identification keys to the Syrphidae. 256pp. KNNV Publishing, Utrecht.
↑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. Шаблон:ISBN.
↑Smith, K.G.V. (1979) The larva and puparium of Cheilosia bergenstammi Becker (Diptera: Syrphidae) with a summary of the known biology of the genus in Europe. Ent.Rec.J.Var., 91: 190-194.
↑Peck, L.V. (1988) Syrphidae. In: Soos, A. & Papp, L. (eds.) Catalogue of Palaearctic Diptera, 8: 11-230. Akad.Kiado, Budapest.
↑de Buck, N. (1990) Bloembezoek en bestuivingsecologie van Zweefvliegen (Diptera, Syrphidae) in het
bijzonder voor België. Doc.Trav. IRSNB, no.60, 1-167.