Ichneumonidae
Guides
Endasys mucronatus
Endasys mucronatus is a species of ichneumon wasp in the family Ichneumonidae, first described by Provancher in 1879. The genus Endasys belongs to the diverse parasitoid wasp family Ichneumonidae, one of the largest families of insects. Very little specific biological information is available for this particular species.
Endasys texanus
Endasys texanus is a species of ichneumon wasp in the family Ichneumonidae, described by Cresson in 1872. It belongs to a genus of parasitoid wasps within the superfamily Ichneumonoidea. The species epithet 'texanus' indicates a connection to Texas, likely reflecting the type locality or region of original collection. Like other members of Ichneumonidae, this species is presumed to be a parasitoid, though specific host relationships and biology remain poorly documented.
Endromopoda producta
A parasitoid wasp species in the family Ichneumonidae, described by Walley in 1960. Very little published information exists on its biology, ecology, or host associations. Records indicate presence in Canada.
Enicospilus cubensis
A species of ichneumon wasp in the genus Enicospilus, described from Cuba in 1863. Belongs to the family Ichneumonidae, a diverse group of parasitoid wasps. The genus Enicospilus contains numerous species distributed across various regions, with E. cubensis being one of the few species with a documented Caribbean distribution. Like other members of its genus, it is presumed to be a koinobiont parasitoid, though specific host relationships for this species remain undocumented.
Enicospilus texanus
Enicospilus texanus is a species of ichneumon wasp in the family Ichneumonidae, first described by Ashmead in 1890. The genus Enicospilus belongs to the diverse parasitoid wasp family Ichneumonidae, one of the largest families of insects. Members of this genus are generally recognized by their distinctive wing venation and body proportions. This species is part of the subfamily Ophioninae or related groups within Ichneumonidae, though precise subfamilial placement requires further verification.
Eparces quadriceps
Eparces quadriceps is a Nearctic ichneumonid wasp in subfamily Ichneumoninae, first described by Cresson in 1867. The species has been recorded from multiple states across the United States, with recent taxonomic revision providing updated nomenclatural clarification and new distributional records. As a member of the parasitoid wasp family Ichneumonidae, it likely functions as a parasitoid of other insects, though specific host associations remain undocumented in available sources.
Epitomus
Epitomus is a genus of ichneumon wasps in the family Ichneumonidae, established by Förster in 1869. The genus is poorly known, with only two observations recorded on iNaturalist and minimal published biological data. It has been documented from Denmark, Norway, and Sweden. As with other ichneumonid genera, members are presumed to be parasitoid wasps, but specific host associations and ecological details remain undocumented.
Eremotylus subfuliginosus
Eremotylus subfuliginosus is a species of ichneumon wasp in the family Ichneumonidae, described by Ashmead in 1894. Members of the genus Eremotylus are recognized as parasitoid wasps, though specific biological details for this species remain limited. The species has been documented through a small number of observations on iNaturalist, suggesting it is either uncommon or underrecorded.
Eriborus
Eriborus is a genus of parasitoid wasps in the family Ichneumonidae with nearly cosmopolitan distribution. Species in this genus are koinobiont endoparasitoids, primarily attacking larval hosts in several lepidopteran families including Pyralidae, Cossidae, Sesiidae, and Noctuidae. Several species have been studied extensively for biological control applications, particularly against agricultural pests such as the European corn borer (Ostrinia nubilalis) and cabbage cluster caterpillar (Crocidolomia pavonana). The genus includes species with documented diurnal activity patterns and temperature-dependent developmental rates.
Eruga lineata
Eruga lineata is a species of ichneumon wasp in the family Ichneumonidae, described by Townes in 1960. It belongs to a large family of parasitoid wasps that are primarily internal or external parasites of other insects. The genus Eruga is part of the diverse ichneumonid radiation, though specific biological details for this particular species remain poorly documented in available literature.
Eutanyacra melanotarsis
Eutanyacra melanotarsis is a species of ichneumon wasp described by Heinrich in 1972. As a member of the large family Ichneumonidae, it is a parasitoid wasp. The specific epithet 'melanotarsis' refers to dark-colored tarsi (foot segments). The species has been documented through limited observations, with 29 records on iNaturalist suggesting it is not frequently encountered or is underreported.
Eutanyacra suturalis
Eutanyacra suturalis is a species of ichneumon wasp in the family Ichneumonidae, first described by Thomas Say in 1835. The species has been recorded from multiple localities across the Canadian Prairie provinces, particularly in Alberta. As a member of the Ichneumonidae, it is presumed to be a parasitoid, though specific host associations remain undocumented in the available sources.
Eutanyacra vilissima
Eutanyacra vilissima is a species of ichneumon wasp described by Heinrich in 1961. It belongs to the family Ichneumonidae, one of the largest families of parasitoid wasps. The genus Eutanyacra comprises species that are parasitoids of other insects. E. vilissima is a poorly documented species with limited published biological information.
Exenterus amictorius
Exenterus amictorius is an ichneumonid parasitoid wasp introduced to North America that attacks sawfly larvae (Hymenoptera: Diprionidae), particularly during the pre-spinning eonymph stage. The species exhibits adaptive host discrimination behavior that changes during the host's spinning period, lacks discrimination initially but rapidly acquires and maintains this ability. It shows strong positive density-dependent responses to host abundance and has established successfully on multiple diprionid hosts across North America. In multiparasitism situations with the native E. diprionis, E. amictorius consistently survives due to faster larval development.
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canadensis
Exenterus canadensis is a species of ichneumon wasp in the family Ichneumonidae, described by Provancher in 1883. The genus Exenterus comprises parasitoid wasps, and members of this genus are known to attack sawfly larvae (Hymenoptera: Symphyta). As with many ichneumonid wasps, the biology of this specific species remains poorly documented in published literature.
Exeristes
Exeristes is a genus of ichneumon wasps (family Ichneumonidae) containing approximately nine described species. Species in this genus are ectoparasitoids of insect larvae. Exeristes roborator has been extensively studied for its associative learning abilities, demonstrating capacity to learn olfactory and visual cues associated with host microhabitats. E. comstockii has been used in nutritional studies examining dietary requirements for reproduction.
Exeristes comstockii
Exeristes comstockii is a parasitoid wasp in the family Ichneumonidae. Laboratory studies indicate it is a koinobiont parasitoid with documented host associations including Galleria mellonella and Lucilia sericata. Adult females require specific dietary components—amino acids, salts, and vitamins—for maximal fecundity. The species exhibits unusual fatty acid metabolism, directly incorporating host lipids rather than maintaining species-characteristic fatty acid profiles.
Exochus albifrons
Exochus albifrons is a species of ichneumon wasp described by Cresson in 1868. It belongs to the genus Exochus within the family Ichneumonidae, a large family of parasitoid wasps. The species has been documented from multiple locations in California and Alberta, Canada. Like other members of its genus, it is presumed to be a parasitoid, though specific host records for this species are not readily available in the provided sources.
Exochus decoratus
Exochus decoratus is a species of ichneumon wasp described by Holmgren in 1873. GBIF and Catalogue of Life list this name as a synonym of Exochus lictor. The species is recorded from Denmark, Norway, and Sweden. No detailed biological or ecological information is available in the provided sources.
Exochus nigripalpis
Exochus nigripalpis is a species of ichneumon wasp described by Thomson in 1887. It belongs to the large family Ichneumonidae, which comprises parasitoid wasps that attack other insects. The species has been documented in Canada and parts of Europe, with observations concentrated in boreal and temperate regions. Like other members of the genus Exochus, it likely functions as a koinobiont parasitoid of Lepidopteran larvae, though specific host records for this species remain limited.
Exyston variatum
Exyston variatum is a species of parasitoid wasp in the family Ichneumonidae, subfamily Ctenopelmatinae. The genus Exyston is recognized for its distinctive morphological features within this subfamily. As with other ctenopelmatines, this species is presumed to be a parasitoid of sawfly larvae (Hymenoptera: Symphyta), though direct host records for this specific species are limited in available literature. The species was described in the 19th century and is part of a genus distributed primarily in the Holarctic region.
Gambrus
Gambrus is a genus of ichneumon wasps in the family Ichneumonidae. The genus was established by Förster in 1868 and has a cosmopolitan distribution, with records from Europe and other regions. As with other ichneumonid genera, members are parasitoid wasps, though specific host associations for Gambrus remain poorly documented.
Gelis
Gelis is a genus of ichneumon wasps in the family Ichneumonidae, containing at least 270 described species. The genus is characterized by small, often wingless females that are parasitoids of various arthropod hosts. Some species have been documented attacking spiders, including ant-eating spiders in the genus Zodarion. The genus shows considerable diversity in form and life history across its species.
Gelis tenellus
Gelis tenellus is a hyperparasitoid wasp in the family Ichneumonidae. It attacks Apanteles melanoscelus, a braconid parasitoid of the gypsy moth (Lymantria dispar), placing it at the fourth trophic level in forest food webs. The species exhibits sophisticated host discrimination behavior, capable of distinguishing between parasitized and unparasitized host larvae. Females locate host cocoons on tree trunks and use their elongated ovipositors to drill through cocoon walls to deposit eggs. The species undergoes diapause induced by photoperiod and temperature cues, an adaptation for seasonal survival.
Giraudia
Giraudia is a genus of ichneumon wasps in the family Ichneumonidae. The genus is also homonymous with a genus of brown algae (Phaeophyceae) in the family Chordariaceae, which has been studied for ecotypic differentiation between temperate and subtropical populations. The wasp genus is placed within the hyperdiverse parasitoid wasp family Ichneumonidae, though specific biological details remain poorly documented. The algal genus is known from marine environments in the North Atlantic, with documented populations in Danish waters and the Canary Islands.
Glyphicnemis vulgaris
Glyphicnemis vulgaris is a species of ichneumon wasp in the family Ichneumonidae, described by Luhman in 1986. The genus Glyphicnemis belongs to the large and diverse ichneumonid lineage, which comprises parasitoid wasps that typically attack other insects. Very little specific information has been published about this particular species.
Glypta
Glypta is a genus of parasitoid wasps in the family Ichneumonidae. Species are endoparasitoids of lepidopteran larvae, particularly tortricid moths including spruce budworm (Choristoneura fumiferana) and related forest pests. Several species have been studied for their role in biological control of economically important forest insects. Adult females locate host larvae using chemical cues and oviposit eggs internally; parasitoid larvae develop within the host and kill it upon emergence.
Glypta animosa
Glypta animosa is a species of ichneumon wasp described by Cresson in 1870. The genus Glypta comprises parasitoid wasps that develop inside the bodies of host insects, with larvae consuming their hosts from within. Like other members of Ichneumonidae, this species likely targets lepidopteran larvae as hosts. The species is rarely documented, with only four observations recorded on iNaturalist.
Glypta fumiferanae
Glypta fumiferanae is an ichneumonid wasp that parasitizes spruce budworm larvae (Choristoneura fumiferana and C. occidentalis). As an endoparasitoid, females deposit eggs inside host larvae, and developing wasp offspring consume the host from within. This species is a significant natural enemy of spruce budworm, a major defoliator of coniferous forests in North America. Adult females are synovigenic and require carbohydrate feeding (honey) for extended longevity and high fecundity; unfed adults survive only 2–5 days and produce far fewer eggs.
Gnamptopelta
Gnamptopelta is a monotypic genus of ichneumonid wasps containing the single species G. obsidianator. The genus is distinguished by a uniquely concave clypeus, reflected in its etymology from Greek roots meaning 'bent shield.' These are large, predominantly black wasps found across eastern North America, where they function as specialist parasitoids of sphinx moth caterpillars feeding on grapevines.
Goneatara nasutus
Goneatara nasutus is a species of ichneumon wasp in the family Ichneumonidae, subfamily Ichneumoninae. The species was described by Heinrich in 1962 based on three female specimens from southern Arizona. It is characterized by an unusual clypeus with a median swelling that becomes bipartite below, branching toward the apical margin—this distinctive feature inspired the specific epithet "nasutus" (meaning "large-nosed"). Females are amblypygous, possessing a very short ovipositor and broad subgenital plate, an adaptation for ovipositing into mature larvae or prepupae of Lepidoptera rather than pupae.
Gravenhorstiini
Gravenhorstiini is a large tribe of parasitoid wasps within the family Ichneumonidae, subfamily Anomaloninae. The tribe encompasses all genera of Anomaloninae except the type genus Anomalon. Members are parasitoids, with females laying eggs in or on host insects. The tribe is taxonomically significant as it represents the primary diversification of the subfamily Anomaloninae.
Grotea
Grotea is a genus of parasitoid wasps in the family Ichneumonidae, subfamily Labeninae. Species in this genus are specialized parasitoids of cavity-nesting bees, particularly in the families Colletidae and Apidae. The genus has been documented across the Americas from the Greater Antilles to southern South America, with recent descriptions of new species from Colombia, Argentina, and Ecuador. Grotea species develop inside host brood cells, with larvae occupying one or more neighboring cells within membranous cocoons.
Habronyx
Habronyx is a genus of parasitoid wasps in the family Ichneumonidae. Adults are approximately 30 mm in length. Species in this genus are internal parasitoids of Lepidopteran larvae, with females laying eggs inside caterpillars using their ovipositor. The genus contains over 50 described species distributed across Europe, Australia, and the Americas.
Hadrostethus scitulus
Hadrostethus scitulus is a species of ichneumonid wasp described by Townes in 1978. It belongs to the genus Hadrostethus, a group of parasitoid wasps within the family Ichneumonidae. The species is known from very few documented observations, with only three records reported on iNaturalist. Like other ichneumonids, it is presumed to be a parasitoid of other insects, though specific host associations remain undocumented.
Helcostizus
Helcostizus is a genus of ichneumon wasps in the family Ichneumonidae, first described by Förster in 1869. The genus is poorly studied, with limited published information on its biology and ecology. Records indicate presence in Scandinavia. Species within this genus are parasitoid wasps, though specific host associations remain undocumented.
Helcostizus tibialis
Helcostizus tibialis is a species of ichneumon wasp described by Townes in 1962. It belongs to the family Ichneumonidae, one of the largest families of wasps, whose members are primarily parasitoids of other insects. The genus Helcostizus is part of the ichneumonoid wasp radiation, and species in this group typically parasitize lepidopteran or coleopteran hosts. The specific epithet 'tibialis' refers to a characteristic of the tibia, a common naming convention in Hymenoptera taxonomy.
Hemitelina
Hemitelina is a subtribe within the family Ichneumonidae, a large group of parasitoid wasps. Members of this subtribe are characterized by specific morphological features of the mesosoma and wing venation that distinguish them from related ichneumonid groups. The subtribe includes the genus Klutiana, which contains species such as Klutiana hemitelina described from Madagascar.
Heterischnus
Heterischnus is a genus of parasitoid wasps in the family Ichneumonidae, subfamily Ichneumoninae, tribe Phaeogenini. The genus occurs across three continents: Europe, North America, and Africa. At least eleven species are recognized, including H. filiformis, which has been documented parasitizing the moth Xestia collina. The Nearctic species were revised in 2021, providing the first regional identification key.
Heteropelma datanae
Heteropelma datanae is a species of ichneumon wasp described by Riley in 1888. The species epithet 'datanae' indicates an association with moths of the genus Datana (Notodontidae), reflecting its parasitoid lifestyle. As a member of the large family Ichneumonidae, it is one of many wasps specialized in parasitizing Lepidopteran hosts. The genus Heteropelma is characterized by distinctive morphological features including a compressed metasoma.
Himerta rubiginosa
Himerta rubiginosa is a species of ichneumonid wasp described by Cresson in 1879. It belongs to the family Ichneumonidae, a large group of parasitoid wasps. Available records indicate it has been documented in parts of Canada, specifically in Calgary and Edmonton. The genus Himerta is part of the diverse ichneumonid fauna, though specific biological details for this species remain poorly documented in published sources.
Homotherus porcelariae
Homotherus porcelariae is a species of ichneumon wasp described by Heinrich in 1961. It belongs to the family Ichneumonidae, one of the largest families of parasitoid wasps. The species is known from a limited number of localities in central Canada, with records from Manitoba and Saskatchewan. Very few observations exist in public databases.
Homotropus
Homotropus is a genus of parasitoid wasps in the family Ichneumonidae, subfamily Diplazontinae. The genus is distributed across the Palearctic region, with confirmed records from Japan, Denmark, Norway, and Sweden. Twelve species are recognized in the Japanese fauna, including the recently described H. japonicum. The genus has undergone taxonomic revision, with several species transferred from the related genus Syrphoctonus and multiple synonymies established.
Hoplocryptus
Hoplocryptus is a genus of ichneumon wasps established by Thomson in 1873. The genus belongs to the family Ichneumonidae, one of the largest families of parasitoid wasps. Species in this genus are poorly documented in the literature, with limited published information available on their biology and morphology. The genus has been recorded from northern Europe.
Hoplocryptus notatus notatus
Hoplocryptus notatus notatus is a subspecies of ichneumonid wasp in the family Ichneumonidae. This parasitoid wasp belongs to a genus within one of the largest families of Hymenoptera. The subspecies has been documented in western Canada, with records from Edmonton and Lethbridge. As with many ichneumonid wasps, its biology likely involves parasitism of other insects, though specific host relationships for this subspecies remain poorly documented.
Hybrizon
Hybrizon is a genus of small parasitoid wasps in the family Ichneumonidae, subfamily Hybrizontinae. Members are specialized ant parasitoids that attack ant larvae transported by worker ants. The genus was historically classified variably, previously placed in Braconidae or treated as a separate family, and the subfamily was formerly known as Paxylommatinae. Oviposition behavior involves females grasping ant larvae with their fore legs while exserting the ovipositor.
Hybrizon flavocinctus
Hybrizon flavocinctus is a species of parasitoid wasp in the family Ichneumonidae, subfamily Hybrizontinae. Members of this subfamily are specialized ant parasitoids, representing the third most diverse group of ant parasitoid wasps after Eucharitidae and Neoneurini. The species was described by Ashmead in 1894. As with other Hybrizontinae, it is presumed to parasitize ants, though specific host records and behavioral observations for H. flavocinctus remain undocumented in the available literature.
Hybrizon rileyi
Hybrizon rileyi is a species of parasitoid wasp in the family Ichneumonidae, subfamily Hybrizontinae. All members of this subfamily are specialized ant parasitoids, representing the third most diverse group of ant parasitoid wasps after Eucharitidae and Neoneurini. The species was described by Ashmead in 1889. Like other Hybrizontinae, it likely parasitizes ant larvae, though specific host records for this species remain poorly documented.
Hybrizontinae
The subfamily Hybrizontinae comprises ant parasitoid wasps within Ichneumonidae, representing the third most diverse group of ant parasitoids after Eucharitidae and Neoneurini. All members are specialized parasitoids of ant societies. The subfamily exhibits two distinct host-searching strategies: an active strategy where females hover over ant trails to attack larvae carried by workers, and an ambush strategy where females hang from vegetation along trails to oviposit undetected.
parasitoidsantsichneumonidaehost-searching-behaviorovipositionant-parasitoidsJapanEuropeLasiusMyrmicaambush-strategyhovering-strategysocial-insect-parasitismspecialized-morphologyreduced-mouthpartsintraspecific-competitiondiurnal-activitysubgenus-specific-host-rangeevolutionary-arms-racenarrow-search-area-trade-offundetected-ovipositionvegetation-hanging-behaviorhind-leg-grippingant-trail-associationlarval-transport-exploitationdefensive-ant-responsesmandible-threatscapture-riskflight-limitationsgrass-perchinghead-down-postureworker-ant-interactionhost-parasitoid-coevolutionant-society-specializationthird-most-diverse-ant-parasitoid-groupPaxylommatinae-(former-name)Braconidae-(formerly-considered-part-of)separate-family-(formerly-considered)Hyposoter
Hyposoter is a large cosmopolitan genus of ichneumonid wasps in the subfamily Campopleginae. Species are koinobiont endoparasitoids that attack various holometabolan insects, primarily Lepidoptera. The genus exhibits substantial species diversity with over 70 species recognized in the Western Palaearctic region alone. Swiss studies indicate higher species richness at low altitudes, with only three species considered high-altitude specialists.