Yellow-faced Bees - Hylaeus

A group of small dark bees, most of which have distinctive yellow or white markings on the face. Identification is usually challenging, but with a good set of photos showing the face, thorax/abdomen and legs working out the species is often possible. A test key to Hylaeus is available from the BWARS website here

Hylaeus communis - Common species. Male with yellow curling around antennal sockets

Hylaeus hyalinatus