A genus of predatory flies.

E. aneus, Brassy Onion Fly, is thus described by Mr. Curtis: -

"The maggots are very rough, from a multitude of short spines or rigid bristles, which cover their skins, especially towards the tail, ferruginous or brownish. The fly itself is of a reddish ochre colour, freckled with dark brown, and there are two spiny processes like short horns upon the thorax, in the female at least. It is densely clothed with short hairs, thickly and distinctly punctured, and of an olive-green colour, with a brassy tinge; the antenna; are entirely black, the seta naked: the face is very hairy, simply convex and silvery white; eyes dark brown and slightly pubescent; rostrum very short; thorax with two whitish lines down the back. The maggots of this fly do not seem to be confined to the onion, for I bred one in the middle of May from cabbage roots, and specimens have been taken flying about hedges in June and July, in the neighbourhood of London and Bristol. As it often happens, the female has not been observed depositing her eggs; the spot that she selects is therefore yet unknown.

Drought does not suit them." - Gard. Chron.