Dasysyrphus pauxillus (Williston, 1887)
Biology & ecology:
Members of the genus Dasysyrphus are aphidophagous but, as yet, the larva of D. pauxillus is unknown. Adults appear to be associated with conifer plantations.
It has already been recorded from two sites in the Brecks of East Anglia. This was a North American species that has been spreading west across Europe and its arrival in the UK had been expected.
Status & conservation:
This species was added to the British list on the basis of two specimens taken in 2010 (Rabbarts, 2010) and is probably a recent arrival.
Recorded from 3 hectads since 1990.