Ensign Fly
Themira species
Description
Over all length 3.5 - 4mm. A small ant-like genus with a black body and clear wings, with no stigma. Specimens in this genus are very difficult to separate to species.
Habitat
Damp boggy areas. The larvae develop in rotting vegetation or dung.
Status and distribution
Distributed widely over Britain.
Best time to see
May to September.