Mostly koinobiont parasitoids of gall midge (Cecidomyiidae)
eggs developing only after host has reached pupal or prepupal stage.
Others are idiobiont parasiotoids of beetle (Coleoptera) or bug
(Homoptera) eggs, or Coccoidea or Aleyrodidae larva.
Diversity
1100 described species
Reference
Masner L. 1993. Superfamily
Platygastroidea (pp. 558-565). In GOULET, H. & HUBER,
J. (eds). Hymenoptera of the World: an identification guide to families.
Research Branch, Agriculture Canada, Ottawa, Canada, 668 pp.
