Chalcid wasps are insects within the superfamily Chalcidoidea, part of the order Hymenoptera. The superfamily contains some 22,500 known species, and an estimated total diversity of more than 500,000 species, meaning the vast majority have yet to be discovered and described. The name "chalcid" is often confused with the name "chalcidid", though the latter refers strictly to one constituent family, the Chalcididae, rather than the superfamily as a whole; accordingly, most recent publications (e.g.,) use the name "chalcidoid" when referring to members of the superfamily.
The Eurytomidae are a family within the superfamily Chalcidoidea.
Tamarixia is a genus of hymenopteran insects of the family Eulophidae, they are parasitoids of Jumping plant lice or psyllids of the superfamily Psylloidea, although some species will parasitise aphids. Most species appear to be ectoparasitoids but at least one species has been recorded as an endoparasitoid.
Metapelma is a parasitic wasp genus in the family Eupelmidae.
Megastigmus is a genus of minute wasps. There are more than 134 described species, more than half of which undergo larval development within the seeds of trees and shrubs.
Anicetus is a parasitic wasp genus in the subfamily Encyrtinae.
Cleonymus is a genus of wasps in the family Pteromalidae.
Entedoninae is a subfamily of wasps in the family Eulophidae which includes over 90 genera.
Leucospis is a genus of wasps belonging to the family Leucospidae. Most species are brightly coloured with yellow and black patterning and about 2 cm long. They have characteristically enlarged femurs on the hind leg with the lower margin toothed. The wings have a longitudinal fold and the long ovipositor is bent over their backs above the abdomen or metasoma. They are parasitic on wasps and solitary bees that construct cells and provision food for their offspring. The Leucospis larvae live and grow as ectoparasites of the host larvae. Usually, only, one parasite emerges from a single cell. The genus Micrapion from South Africa is very closely related and phylogenetic studies suggest merging of the two genera. The genus Leucospis is found across the world in the tropical regions.
Psyllaephagus is a genus of chalcid wasps. It was named and circumscribed by William Harris Ashmead in 1900. As of 2017, Psyllaephagus contains approximately 245 species.
Haltichellinae is a subfamily of chalcidid wasps in the family Chalcididae.
Eucharitinae is a subfamily of chalcid wasps in the family Eucharitidae.
Dirhinus is a genus of parasitic wasps in the family Chalcididae. The genus has a worldwide distribution.
Syrphophagus is a genus of wasps belonging to the family Encyrtidae.
