The proboscis is of the blood-sucking type, strongly sclerotised, at least as long as head, without distinct labella.

The lower squama is broadly rounded at the apex, its inner margin strongly diverging from scutellum throughout.

The larvae are trimorphic and leave the egg in the first instar and may reach maturity without resorting to carnivory.

Adults are found around cattle on which they feed, and in farm buildings such as milking parlours etc.

This article related to members of the fly family Muscidae is a stub.