Chalcid wasp

The chalcid wasps are formally called the Chalcidoidea. They are a superfamily of parasitoid wasps. They have a huge number of species, estimated as over 500,000 (half a million).Heraty, John M. and others 2013. A phylogenetic analysis of the megadiverse Chalcidoidea (Hymenoptera). Cladistics 29 (5): 466–542.  The superfamily includes 22 families. The data included morphology and ribosomal 18S data. The researchers comment that only about 22,506 species of the half-million have been formally described.

Most of the species are parasitic on other kinds of insect. They attack the egg or larval stages of at least 12 different insect orders. When that insect is itself a parasitoid, then the chalcid is called a hyperparasitoid. Chalcids are sometimes used to control crop pests. A few chalcids  actually eat plants, and the most famous of these are the fig wasps.

There are 19 living families of chalcids.

 References 

Category:Wasps
Category:Parasitoids