Coenus delius (Say 1832)

Coenus delius is common east of the Rocky Mountains (Rider 1995).

Adults can be found from June to August.

Coenus delius has red brown to dark brown antennae with the fifth segment being the darkest. There is a pale median line on the pronotum and scutellum. Along the anterior margins of the pronotum there are dense black punctures and the edges are covex. The rostrum reaches the metacoxae and the cheeks and clypeus are nearly equal in length. Maculations on the legs are brown, uniform and sparse. The tarsi are three segmented. The abdominal segments three through five are lacking in pale areas. It is slightly smaller than the other two species of Coenus and there is a median tooth on the pygophore which is distinctive to C.delius (Rider 2005).

Found in grassy habitats.

Coenus delius feeds on several different species of Poaceae, Fabaceae and Scrophulariaceae. They also feed specifically on Mentha spicata, Pinus species and Polygonum species (Rider 2005 ).