Yellow Cereal-fly

Opomyza florum


Over all length 5 - 5.5mm. A small, yellowish fly with some dark spots on its wings as well as dark wingtips.


Grassy areas and fields. The larvae develop in the stems of grasses. Can be an agricultural pest when they attack cereal crops in some density.

Status and distribution

Commonest in the southern half of Britain. Fairly common on the reserve.

Best time to see

June to October.