Parasyrphus lineolus is a Holarctic species of hoverfly.
Description External images For terms see Morphology of Diptera Wing length 7·25-8·25 mm. Black face stripe. Leg 3 black with at most knee yellow, apex of tibiae 3 black. Tarsi 1 all segments black. Pterostigma dark grey. The male genitalia are figured by Hippa (1968).Hippa, H. (1968) A generic revision of the genus Syrphus and allied genera (Diptera: Syrphidae) in the Palearctic region, with descriptions of the male genitalia. Acta Ent.Fenn., 25: 1-94. and Vockeroth (1969).Vockeroth J.R. (1969) A revision of the genera of the Syrphini (Diptera: Syrphidae). Memoirs of the Entomological Society of Canada 62: 1 –176. The Larva is described and figured by Heiss (1938) .Heiss, E.M. (1938) A classification of the larvae and puparia of the Syrphidae of Illinois exclusive of aquatic forms. Univ.Illinois Bull., 36: 1-142. 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 Fennoscandia South to the Pyrenees. Ireland East through Central Europe and South Europe (North Italy and the Balkans), then East into European Russia and from the Urals through Siberia to the Pacific coast (Kamchatka, Sakhalin Is.) Nearctic Alaska to Quebec South to Colorado and New Mexico.Fauna EuropaeaPeck, L.V. (1988) Syrphidae. In: Soos, A. & Papp, L. (eds.) Catalogue of Palaearctic Diptera, 8: 11-230. Akad.Kiado, Budapest.
Biology Habitat: Abies, Picea, Pinus forest. Flowers visited include yellow composites, white umbellifers, Acer platanoides, Achilea, Alchemilla, Anemone nemorosa, Calluna vulgaris, Caltha, Cardaminopsis, Galium, Inula, Meum, Petasites albus, Potentilla erecta, Prunus, Ranunculus, Rubus fruticosus, Salix, Sambucus nigra, Sorbus aucuparia, Taraxacum, Triplospermum inodorum, Valeriana officinalis, Veronica, Viburnum.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 April to July. The larva is aphid feeding.
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