Trichacis
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| Trichacis | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Platygastridae |
| Subfamily: | Platygastrinae |
| Genus: | Trichacis Förster, 1856 |

Trichacis is a genus of parasitoid wasps in the family Platygastridae. Members of this genus have a tuft of setae on the mesoscutellum and transverse striae or rugulae above the antennae. They are parasitoids of Cecidomyiidae, although the hosts of most species remain unknown.[1]
The genus has been revised for the Nearctic,[2] Neotropics,[3] and Europe.[1] There have been more than 60 species described in Trichacis;[4][5][6] however, many of these have been since synonymized.[1]