Oncopsis subangulata

Length 4.5 to 5.5 mm. Intraocular band weak and does not reach eyes; discoidal spots weak/absent. 

Oncopsis species are sexually dimorphic and also rather variable; identification can be complex. O. subangulata and O. flavicollis are very similar in size and general appearance. Both feed on birch and are often found together. For this reason detailed examination is necessary for positive identification. Whilst images placed in a red box are likely to be this species, they can only be claimed to be representative of the species.

O. flavicollis

Detailed examination of the specimen is needed to identify this species. A photograph alone is not normally sufficient because key features are not obvious and there are one or more similar species.

Favours birch.

Adult: May to September.

Widely distributed throughout Britain on birch, but more local than O. flavicollis.

Status in Leicestershire and Rutland not known.