It is a bare-eyed, bluish-grey Cheilosia with pale knees and distinct smudges over the two cross veins of the wings. The lower face is rather strongly protruding, the third antennal segment is brownish-red and the antennal pits are fused.

Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.

Associated with houseleeks and likely to occur in gardens where the larval foodplant is present.

Late spring to early autumn.

The larvae mine the leaves of houseleeks (non-native garden plants) and it is presumed that the fly was introduced accidentally with imported plants.

A recent British colonist that was first recorded in 2006 from Surrey and currently spreading across southern England to Derbyshire by 2018 and VC55 in 2019.

Rare in Leicestershire and Rutland but may be moving into our area.