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Dusky-banded Leafwalker
Chalcosyrphus nemorum
Chalcosyrphus (Xylotomima) nemorum (Fabricius 1805), the Dusky-banded Leafwalker, is a common species of syrphid fly with a Palearctic and Nearctic distribution. Hoverflies get their names from the ability to remain nearly motionless while in flight. The adults are also known as flower flies for they are commonly found around and on flowers, from which they get both energy-giving nectar and protein-rich pollen. Larvae have been found under the bark of Larix, Pinus and a variety of hardwoods.
From the article Chalcosyrphus nemorum on Wikipedia (CC BY-SA), quoted section by section
Description
External images For terms see Morphology of Diptera Wing length 6.5-8.25 mm. Hind femora are swollen and deep. Hind tibiae strongly curved and the ventral surface with closely-set short black hairs for the whole length. The abdomen is short tergites 2-4 with a pair of pink or orange-brown marks. The legs are black with yellow knees and yellow tarsi.
The larva is figured by Hartley (1961).
Range & habitat
Fennoscandia South to the Pyrenees and from Ireland East through Northern, Central and Southern Europe (to South Italy) across the Palearctic into Russia and the Russian Far East and Sakhalin and Japan. In the Nearctic from Alaska to Nova Scotia and South to California. (see distribution map)
Wikipedia: “Distribution”
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Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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Every page naming Chalcosyrphus nemorum in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 486881.