The Ichneumonidae, also known as ichneumon wasps, ichneumonid wasps, ichneumonids, or Darwin wasps, are a family of parasitoid wasps of the insect order Hymenoptera. They are one of the most diverse groups within the Hymenoptera with roughly 25,000 species described as of 2016. However, this likely represents less than a quarter of their true richness as reliable estimates are lacking, along with much of the most basic knowledge about their ecology, distribution, and evolution. It is estimated that there are more species in this family than there are species of birds and mammals combined. Ichneumonid wasps, with very few exceptions, attack the immature stages of holometabolous insects and spiders, eventually killing their hosts. They thus fulfill an important role as regulators of insect populations, both in natural and semi-natural systems, making them promising agents for biological control.
Cryptinae is a subfamily of wasps in the family Ichneumonidae. The family has also been called Gelinae, Hemitelinae, and Phygadeuontinae by various authorities, though the Phygadeuontinae have since been elevated to a separate subfamily.
Banchinae is a subfamily of ichneumonid parasitoid wasps containing about 1,500 species; the genera Glypta and Lissonota are very large. The three tribes are all distributed worldwide.
Pimplinae are a worldwide subfamily of the parasitic wasp family Ichneumonidae.
Acaenitinae is a subfamily of the parasitoid wasp family Ichneumonidae. Female Acaenitinae have a large triangular projecting genital plate.
Campopleginae is a large subfamily of the parasitoid wasp family Ichneumonidae with a world-wide distribution. Species in this subfamily have been used in the biological control of the alfalfa weevil, clover weevil, various species of Heliothis, oriental army worm, European corn borer, larch sawfly, and others.
In this checklist are presented all wasp species of family Ichneumonidae found within the UK.
Ephialtini is a unresolved tribe of ichneumon wasps in the family Ichneumonidae. There may be about 53 genera and at least 120 species in Ephialtini.
Euceros is a cosmopolitan genus of ichneumon wasps in the family Ichneumonidae.
Phygadeuontini is a tribe of ichneumon wasps in the family Ichneumonidae. It is the only tribe in the subfamily Phygadeuontinae. There are about 123 genera in 12 subtribes worldwide.
Gambrus is a genus of wasps belonging to the family Ichneumonidae. The genus was first described by Förster in 1868 and has cosmopolitan distribution.
Aptesis is a genus of parasitoid wasps belonging to the family Ichneumonidae. The genus was first described by Arnold Förster in 1850 and has almost cosmopolitan distribution.
Hyposoter is a large cosmopolitan genus of parasitoid wasps belonging to the family Ichneumonidae.
Erromenus is a genus of parasitoid wasps belonging to the family Ichneumonidae.
Phaeogenini is a tribe of ichneumon wasps in the family Ichneumonidae.
