Synonyms and other taxonomic changes
Formerly placed in Proctotrupoidea.
>300 spp. in 35 genera in our area(1)
, estimated 4,000 spp. worldwide (of which fewer than half have been described)(2)
Body small, black, and shiny; antennae 11- to 15-segmented, rising from a facial protuberance; trochanters two-segmented; wing venation reduced or nearly absent compared to the aculeate Hymenoptera, with 2 or fewer cells enclosed by tubular veins in the forewings.
Metasoma with tergum 1 about the same length as, or shorter than, other metasomal terga, or much narrower than rest of metasoma. Head hypognathous. Pronotum in dorsal view usually more or less U-shaped. Insertion of the antennae facing upwards, on the upper surface of a "ledge" located on the frons that is best seen in lateral view. Fore wing without stigma. Antennal scape usually over 3 times as long as wide. Pronotum in lateral view usually extending posteriorly to tegula. Body rarely with metallic color. Antennal bases separated by more than its own diameter from dorsal margin of clypeus (3)
Adults are usually found in wooded areas with decaying vegetation and fungi
Larvae are typically parasites of fungus gnats and other dipterans