Orthonevra nobilis is a species of hoverfly.
Description External images For terms see Morphology of Diptera Wing length 4-5 ·75 mm. White marks on face extend narrowly downwards. Pterostigm dark brown or black. Antennomere 3 pointed Female tergite 5 with a small incision at hind margin. van der Goot (1981) figures the male genitalia. The larva is described and figured by Maibach and Goeldlin (1994).Maibach, A. & Goeldlin de Tiefenau, P. (1994) Limites génériques et caractéristiques taxonomiques de plusieurs genres de la Tribu des Chrysogasterini (Diptera: Syrphidae) III. Descriptions des stades immatures de plusieurs espèces ouest-paléarctiques. Rev.suisse Zool., 101: 369-411).
See references for determination.Van Veen, M. (2004) Hoverflies of Northwest Europe: identification keys to the Syrphidae. 256pp. KNNV Publishing, Utrecht.addendumVan 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 Palearctic Range: Central Fennoscandia, South to Central Spain. Ireland, East North Europe and Central Europe and North Italy. East into Yugoslavia, Greece and Turkey European Russia and the Caucasus, the Russian Far East, Siberia and North China.Fauna EuropaeaPeck, L.V. (1988) Syrphidae. In: Soos, A. & Papp, L. (eds.) Catalogue of Palaearctic Diptera, 8: 11-230. Akad.Kiado, Budapest.
Biology Habitat: Streams in Fagus woodland, riparian gallery forest, springs and flushes in fen and raised bog. Flowers visited include white umbellifers, Fragaria, Galium, Potentilla erecta, Ranunculus.de Buck, N. (1990) Bloembezoek en bestuivingsecologie van Zweefvliegen (Diptera, Syrphidae) in het bijzonder voor België. Doc.Trav. IRSNB, no.60, 1-167. The flight period is May/ to August.The larva is associated with springs and flushes, where it occurs in wet, organically-enriched mud.
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