Length 3-4mm. Metallic green. Basal cell of forewing bare or with at most a few hairs distally. Antennae with all funicular segments transverse, combined length of pedicellus and flagellum less than breadth of head. Propodeum very short, medially from hardly one quarter to slightly more than one third as long as the scutellum, reticulate. Mesoscutum with some shallow though distinct piliferous punctures amongst the reticulation. 

Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

Associated with Oaks. 

Adults May-July.

Parasitoid in galls of Biorhiza pallida, probably also of Andricus quercusramuli, quercusradicis; Plagiotrochus quercusilicis.

Common, widespread.

Unknown.

Graham, MWR de V. (1969) The pteromalidae of north-western Europe (Hymenoptera: Chalcidoidea). Bull. Br. Mus. nat. Hist. (Ent.) Suppl. 16.