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.
Acaenitinae is a subfamily of the parasitoid wasp family Ichneumonidae. Female Acaenitinae have a large triangular projecting genital plate.
Tersilochinae is a worldwide subfamily of the parasitic wasp family Ichneumonidae.
The Labeninae is a subfamily within the parasitoid wasp family Ichneumonidae. The family is divided into 12 extant genera grouped within four tribes.
Anomalon is a large genus of parasitoid wasps belonging to the family Ichneumonidae. This may be the only genus in the tribe Anomalonini, although Neogreeneia Viereck, 1912 is sometimes considered a valid genus of the tribe.
Tromatobia is a genus of ichneumon wasps in the family Ichneumonidae. There are at least 4 described species in Tromatobia. Species in this genus are parasites of egg sacs of spiders from the families Araneidae, Clubionidae, Philodromidae and Theridiidae.
Netelia is a genus of ichneumonid wasps in the subfamily Tryphoninae. There are over 330 described species in Netelia grouped into 12 subgenera.
Acrotaphus is a genus of ichneumon wasps in the family Ichneumonidae. There are about 26 described species in Acrotaphus. They are parasitoids of Araneidae and Tetragnathidae spider families.
Calliephialtes is a genus of ichneumon wasps in the family Ichneumonidae. There are 22 described species in Calliephialtes.
Clistopyga is a genus of ichneumon wasps in the family Ichneumonidae. There are at least 30 described species in Clistopyga.
Dolichomitus is a genus of ichneumon wasps in the family Ichneumonidae. There are at least 70 described species in Dolichomitus. The name is derived from the Greek dolicho, meaning long or narrow, and the Greek mitus, meaning a thread.
Iseropus is a genus of ichneumon wasps in the family Ichneumonidae. There are about nine described species in Iseropus.
Zatypota is a genus of ichneumon wasps in the family Ichneumonidae. There are at least 40 described species in Zatypota.
Exetastes is a genus of parasitoid wasps belonging to the family Ichneumonidae.
Enizemum is a genus of parasitoid wasps belonging to the family Ichneumonidae.
Habronyx is a genus of parasitoid wasps belonging to the family Ichneumonidae. The species of this genus are found in Europe, Australia, and North and South America.
Hymenoepimecis is a genus of parasitoid wasps belonging to the family Ichneumonidae best known for parasitizing arachnids, specifically those of the families Araneidae and Tetragnathidae.
Habronyx fulvipes is a species of parasitic ichneumon wasp. It was renamed by Townes, Momoi and Townes in 1965 ; prior to that the species had been named Habronyx chinensis, chinensis meaning "China", in 1955 by Japanese entomologist Toichi Uchida. The holotype and allotype were collected by R. Mell. The species was first named Exochilum Chinense by Morley in 1913.
