Platycheirus nielseni

Platycheirus nielseni is a Holarctic species of hoverfly.

Description

For terms see Morphology of Diptera
Tibiae 2 uniformly broadened from base towards apex then becoming smaller and then swelling strongly on apical 1/5.

Distribution

Palearctic Fennoscandia South to northern France.Ireland Eastwards through Northern Europe and Central Europe, northern Italy to EuropeanRussia; Siberia Nearctic Alaska through Canada and South through the Rocky mountains to Colorado.