This superfamily contains many species which form galls on plants and they have been widely studied. Most can be identified using the guides published by the Royal Entomological Society as Handbooks for the Identification of British Insects.
The following families and subfamilies are included in the British fauna:
Cynipidae
Figitidae (subfamilies Anacharitinae, Aspicerinae, Charipinae, Eucoilinae and Figitinae)
Ibalidae