Sweat Fly

Morellia simplex


Over all length 9 to 10mm. A dark, blackish fly attractively marked with grey and white on the thorax and abdomen.


Most often recorded around cattle, where its attentions can be a nuisance.

Status and distribution

Common and widespread throughout much of Britain. Common in Nottinghamshire and at Netherfield Lagoons.

Best time to see

April/May and August/September.