Small dark wasps with sharply elbowed antennae. Scutellum with a specialised area with a tuft of fine dense erect hair at the end. Frons smooth; temples receding behind the eyes. Club of the female antennae with 3–5 segments. Abdomen formed of six visible tergites. 

Currently three species on the UK checklist but a recent paper suggest there may only be one, so we currently suggest recording these species at genus level. 

Unless identified by a recognised expert, photos are required showing the key features. If keyed describe how it was identified and the key used.

Unknown. 

Unknown. 

Awad, J, Krogmann, L, & Talamas, E. (2023) Illuminating a dark taxon: Revision of European Trichacis Förster (Hymenoptera: Platygastridae) reveals a glut of synonyms. Zootaxa, 5278(3), 563-577.