British Wildlife Wiki

The Yellow-legged Clearwing (Synanthedon vespiformis) is a species of moth in the Sesiidae family.

This day-flying moth is classed as Nationally Scarce B in Britain, inhabiting woodlands in the South and Central of Britain. This moth has yellow legs as it's name suggests, but on the legs there is a black band which is thickest on the back two. The abdomen has four yellow bands, which are quite think. The tip of the black abdomen is yellow. The thorax has two thin yellow stripes, and two yellow dots.

Yellow-legged Clearwing TL

When the Yellow-legged Clearwing is active

It is a Batesian Mimic, mimicing the pattern of the venomous and more menacing family of flying insects, the wasps.