''Orthonevra geniculata'' is a species of

hoverfly Hover flies, also called flower flies or syrphid flies, make up the insect family Syrphidae. As their common name suggests, they are often seen hovering or nectaring at flowers; the adults of many species feed mainly on nectar and pollen, while ...

found in the

Palearctic The Palearctic or Palaearctic is the largest of the eight biogeographic realms of the Earth. It stretches across all of Eurasia north of the foothills of the Himalayas, and North Africa. The realm consists of several bioregions: the Euro-Sibe ...

Description

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Morphology of Diptera Dipteran morphology differs in some significant ways from the broader morphology of insects. The Diptera is a very large and diverse order of mostly small to medium-sized insects. They have prominent compound eyes on a mobile head, and (at most) ...

Wing length 4·5-5·5 mm. Face with triangular white marks. Legs yellow. Wing vein r-m brown. Pterostigm bicolorous: pale with dark area at base. Maibach et al. (1994) figure the male terminalia. See references for determination.

Distribution

North Norway to Belgium. Ireland East through North Europe and Central Europe. North Italy. European Russia to the Russian Far East, Siberia and Mongolia. BagnLNature

Biology

Habitat: ''Quercus'' forest (beside springs, flushes and brooks). ''Alnus'' and ''Salix'' habitats carr, fen and margins of raised bogs. Flowers visited include ''Anemone nemorosa'', ''Bellis'', ''Caltha'', ''Cardamine'', ''Malus sylvestris'', ''Menyanthes'', ''Prunus spinosa'', ''Ranunculus'', ''Salix'', 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 mid April to mid May.The larva is associated with springs and wet flushes.

References

Diptera of Europe Brachyopini Insects described in 1822 category:Taxa named by Johann Wilhelm Meigen {{Brachyopini-stub