Ichneumonid
Guides
Dusona egregia
Dusona egregia is a species of ichneumon wasp in the family Ichneumonidae, described by Viereck in 1916. Members of the genus Dusona are parasitoid wasps, with females using their ovipositors to lay eggs in host insects. The species belongs to a large genus containing over 400 described species worldwide.
Dusona rufescens
Dusona rufescens is a species of ichneumon wasp in the family Ichneumonidae, first described by Walley in 1940. As a member of the genus Dusona, it is part of a large and diverse group of parasitoid wasps. The species name "rufescens" refers to a reddish or rust-colored appearance. Very little specific information about this species has been documented in readily available sources.
Dusona wyomingensis
Dusona wyomingensis is a species of ichneumonid wasp described by Viereck in 1906. The genus Dusona comprises parasitoid wasps, with most species targeting Lepidoptera larvae as hosts. This species is known from scattered records in western Canada, including Alberta and Saskatchewan. Published biological information specific to this species is limited.
Echthrus niger
Echthrus niger is a species of ichneumon wasp in the family Ichneumonidae, described by Cresson in 1868. It belongs to a genus of parasitoid wasps that attack wood-boring beetle larvae. The species has been recorded in western Canada, specifically in Alberta and surrounding regions.
Eiphosoma
Eiphosoma is a genus of ichneumonid wasps in the subfamily Cremastinae, established by Cresson in 1865. Species in this genus are larval endoparasitoids primarily associated with noctuid moth larvae, particularly the fall armyworm (Spodoptera frugiperda). Several species have been investigated as biological control agents for agricultural pests, with E. vitticolle and E. laphygmae receiving particular attention for their potential in integrated pest management. The genus exhibits a New World distribution centered in the Neotropics, with documented species from Cuba, Colombia, Mexico, Brazil, and Costa Rica.
Endasys oregonianus
Endasys oregonianus is a species of ichneumon wasp described by Luhman in 1990. The specific epithet "oregonianus" indicates a type locality or primary distribution in Oregon, USA. As a member of the large family Ichneumonidae, this species is presumed to be a parasitoid, though its specific host associations remain undocumented in available sources. The genus Endasys is part of the diverse ichneumonid fauna of North America.
Enicospilus americanus
A member of the Enicospilus americanus species complex in the family Ichneumonidae. This parasitoid wasp is one of seven species in the complex recognized from eastern North America. The species was originally described by Christ in 1791 and remains taxonomically valid.
Enicospilus peigleri
Enicospilus peigleri is a species of ichneumon wasp in the subfamily Ophioninae, described by Gauld in 1988. It belongs to a genus of nocturnal parasitoid wasps characterized by large ocelli, long antennae, and typically uniform orange coloration. Like other Enicospilus species, it is attracted to artificial light sources at night. The species is part of a diverse genus with wide geographic distribution, though specific details about E. peigleri remain limited in published literature.
Enizemum
Enizemum is a genus of parasitoid wasps in the family Ichneumonidae, established by Förster in 1869. Species are distributed across Europe and North America, with at least five described species including the type species Enizemum ornatum (Gravenhorst, 1829). Like other ichneumonids, these wasps are parasitoids that develop by feeding on host insects.
Eparces
Eparces is a genus of ichneumonid wasps in the subfamily Ichneumoninae, first described by Förster in 1869. The Nearctic fauna was revised in 2023, resulting in the description of Eparces australis from the southeastern United States and new distributional records for Eparces quadriceps. The genus belongs to the large parasitoid wasp family Ichneumonidae, though specific biological details remain poorly documented.
Ephialtes
Ephialtes is a genus of ichneumonid wasps (family Ichneumonidae, subfamily Pimplinae, tribe Ephialtini) established by Gravenhorst in 1829. The genus includes species that are ectoparasitoids of solitary aculeate Hymenoptera, with females possessing notably long ovipositors adapted for accessing host nests. Ephialtes manifestator, the type species and best-documented member, has been subject to genome sequencing and ecological study. The genus is distributed across Europe and has been recorded in North America.
Ephialtini
Ephialtini is a tribe of ichneumonid wasps within the subfamily Pimplinae, comprising approximately 17 genera and at least 120 species. Members are exclusively parasitoids of spiders (Araneae), with many species belonging to the 'Polysphincta group' that attack post-embryonic spiders. These wasps exhibit diverse host specificity patterns, ranging from polyphagy across multiple spider families to strict specialization on particular host species or genera. Some species parasitize adult spiders while others attack spider egg sacs.
Eriborus terebrans
Eriborus terebrans is a solitary parasitoid wasp in the family Ichneumonidae. It has been documented as a parasitoid of European corn borer (Ostrinia nubilalis) caterpillars and Paranthrene tabaniformis caterpillars. The species was first described by Gravenhorst in 1829 under the basionym Campoplex terebrans.
Eridolius
Eridolius is a genus of ichneumon wasps in the family Ichneumonidae, first described by Förster in 1869. The genus is poorly documented in public sources, with limited species-level information available. It has been recorded from parts of northern Europe.
Eruga
Eruga is a genus of ichneumon wasps in the tribe Ephialtini, comprising approximately 15 species distributed across the Afrotropical, Nearctic, and Neotropical regions. Members of this genus are ectoparasitoids of spiders, specifically targeting species in the families Linyphiidae and Tetragnathidae. The genus is notable for behavioral manipulation of host spiders, inducing them to construct modified 'cocoon webs' that support and protect the wasp's pupal cocoon.
Euceros
Euceros is a cosmopolitan genus of ichneumonid wasps in the subfamily Eucerotinae, containing approximately 48 described species. The genus was historically placed in Tryphoninae but is now recognized as sister to Barronia. At least some species are hyperparasitoids, with E. frigidus documented as attacking the sawfly Neodiprion swainei in Canadian jack pine forests.
Euryproctini
Euryproctini is a tribe of parasitoid wasps in the subfamily Ctenopelmatinae (Ichneumonidae). The tribe includes the genus Syndipnus, which has been recorded from the West Palaearctic region. Members of this tribe are endoparasitoids, though direct host records for the tribe are limited and some associations remain speculative.
Euryproctus
Euryproctus is a genus of parasitoid wasps in the family Ichneumonidae, first described by Holmgren in 1855. The genus has a cosmopolitan distribution and includes species such as Euryproctus geniculosus and Euryproctus regenerator. As ichneumonids, members of this genus are presumed to be parasitoids of other insects, though specific host associations remain poorly documented. The genus is recorded from Europe, including Denmark, Norway, and Sweden.
Eusterinx
Eusterinx is a genus of ichneumon wasps in the family Ichneumonidae, first described by Förster in 1869. These parasitoid wasps are part of the diverse Terebrantes group within Hymenoptera. The genus is poorly documented in literature, with limited species-level information available. Records indicate presence in northern Europe, particularly Norway and Sweden.
Eutanyacra
Eutanyacra is a genus of ichneumonid wasps erected by Cameron in 1903. Members of this genus are parasitoid wasps within the family Ichneumonidae, one of the largest families of Hymenoptera. The genus has been documented from Scandinavia and Denmark. Specific biological details remain poorly documented in published literature.
Exetastes
Exetastes is a genus of parasitoid wasps in the family Ichneumonidae, established by Johann Ludwig Christian Gravenhorst in 1829. The genus contains at least 11 described species with a cosmopolitan distribution, found across Europe, Asia, and North America. As ichneumonids, members of this genus are parasitoids, though specific host associations remain poorly documented.
Exetastes fornicator nervulus
Exetastes fornicator nervulus is a subspecies of ichneumonid wasp in the genus Exetastes. It was described by Thomas Say in 1835. The subspecies is recorded from both North America and Europe, with specific distribution records from Canada and Belgium. Like other members of the family Ichneumonidae, it is a parasitoid wasp, though specific host associations for this subspecies are not well documented.
Exetastes suaveolens
Exetastes suaveolens is a species of ichneumon wasp in the family Ichneumonidae, described by Walsh in 1873. The genus Exetastes comprises parasitoid wasps, and members of this genus are known to attack wood-boring beetle larvae. This species has been recorded in North America, with distribution records from Canada (Aweme, Manitoba) and the northeastern United States (Vermont).
Exochus
Exochus is a large genus of ichneumon wasps in the subfamily Metopiinae, containing at least 270 described species. The genus was established by Gravenhorst in 1829. Species occur across multiple continents, with records from the Neotropical region including Brazil. Members are parasitoid wasps, though specific host associations remain poorly documented for most species.
Exochus atriceps
Exochus atriceps is a species of ichneumon wasp described by Walsh in 1873. It belongs to the genus Exochus, a group of koinobiont endoparasitoids within the family Ichneumonidae. The species is known from limited records in Canada. Like other members of its genus, it likely parasitizes lepidopteran larvae, though host associations for this specific species remain undocumented.
Exochus nigripalpis tectulum
Exochus nigripalpis tectulum is a subspecies of ichneumonid wasp described by Townes & Townes in 1959. It belongs to the genus Exochus, a group of koinobiont parasitoid wasps that attack concealed lepidopteran larvae. The subspecies designation suggests geographic or morphological differentiation from the nominate form E. nigripalpis nigripalpis. Records indicate presence in Canada, Denmark, and Norway.
Exyston maculosum
Exyston maculosum is a species of ichneumon wasp in the subfamily Ctenopelmatinae. Members of this genus are parasitoids, with females laying eggs in host insects. The species exhibits the characteristic features of Exyston, including a robust body and distinct coloration patterns.
Exyston reniformis
Exyston reniformis is a species of parasitoid wasp in the family Ichneumonidae, first described by Mason in 1959. The species name 'reniformis' refers to kidney-shaped structures, likely describing a diagnostic morphological feature. As a member of the subfamily Ichneumoninae, it is presumed to be a koinobiont endoparasitoid of Lepidoptera larvae, though specific host associations remain undocumented. The genus Exyston is small and poorly studied, with most species known from limited specimens.
Gambrus amoenus
Gambrus amoenus is a species of ichneumon wasp in the family Ichneumonidae, first described by Gravenhorst in 1829. The genus Gambrus belongs to the subfamily Ichneumoninae, a large and diverse group of parasitoid wasps. Species in this genus are known to parasitize lepidopteran larvae, particularly those of moth families such as Noctuidae. G. amoenus is one of several species within the genus that has been documented in Europe and parts of Asia.
Glyphicnemis
Glyphicnemis is a small genus of parasitoid wasps in the family Ichneumonidae, with 13 described species. The genus occurs in the Holarctic and Indo-Malaysian regions. Members are parasitoids, meaning they develop by feeding on or within host organisms.
Glyphicnemis mandibularis
Glyphicnemis mandibularis is a species of ichneumonid wasp in the family Ichneumonidae. It was first described by Cresson in 1864. The genus Glyphicnemis belongs to the large and diverse parasitoid wasp family Ichneumonidae, which are primarily known for their role as parasitoids of other insects. Available records indicate this species has been observed in the Edmonton area of Canada, though detailed biological information remains limited.
Glypta ralla
Glypta ralla is a species of ichneumonid wasp described by Dasch in 1988. Members of the genus Glypta are known as parasitoid wasps that attack caterpillars, with females laying eggs inside host larvae. The species belongs to a large group of parasitoids whose immature stages develop by consuming their host from the inside, ultimately killing it. Very few specific details have been published about this particular species.
Gnamptopelta obsidianator
bent-shielded besieger wasp
Gnamptopelta obsidianator is a large ichneumonid wasp and the sole species in its monotypic genus. It is distinguished by a concave clypeus, a trait reflected in its genus name derived from Greek words for 'bent' and 'shield.' The species is an ectoparasitoid of sphinx moth caterpillars (Macroglossinae) feeding on grapevines. Adults are active in spring across eastern North America.
Hemihoplis
Hemihoplis is a genus of ichneumonid wasps established by Heinrich in 1960. The genus belongs to the family Ichneumonidae, one of the largest families of parasitoid wasps. Very few observations of this genus exist in public databases, with only three records on iNaturalist as of the knowledge cutoff. The genus name suggests a morphological relationship to the genus Hoplis, with 'hemi-' indicating a partial or intermediate condition.
Hemihoplis propitius
Hemihoplis propitius is a species of ichneumon wasp in the family Ichneumonidae, first described by Cresson in 1872. It belongs to the genus Hemihoplis, a group of parasitoid wasps whose biology remains poorly documented. The species is known from very few observations, with only three records in iNaturalist. Like other ichneumonids, it likely functions as a parasitoid of other insects, though specific host relationships have not been established.
Hoplismenus morulus morulus
Hoplismenus morulus morulus is a subspecies of ichneumon wasp in the family Ichneumonidae. This parasitoid wasp is recorded from multiple localities across the Canadian Prairie provinces. As a member of the genus Hoplismenus, it likely functions as a parasitoid of other insects, though specific host records for this subspecies are not well documented. The subspecific status indicates morphological or geographic differentiation from the nominate form.
Hyposoter fugitivus
Hyposoter fugitivus is an ichneumonid parasitoid wasp first described by Thomas Say in 1835. Molecular studies have established that this species carries polydnavirus DNA integrated into its chromosomes, representing a stable symbiotic relationship. The polydnavirus is transmitted vertically and likely plays a role in manipulating host physiology during parasitism, though specific host associations remain undocumented in available sources.
Ischnus sparsus
Ischnus sparsus is a species of ichneumon wasp described by Townes in 1962. It belongs to the genus Ischnus within the family Ichneumonidae, one of the largest families of parasitoid wasps. The species is poorly documented in public sources, with minimal observational records available.
Isdromas lycaenae
Isdromas lycaenae is a species of ichneumon wasp in the family Ichneumonidae. It was described by Howard in 1889. The species belongs to the genus Isdromas, which is characterized by distinctive morphological features including reduced wing venation. Like other members of its family, it is likely a parasitoid, though specific host records for this species are not well documented in available literature.
Iseropus coelebs
Iseropus coelebs is a species of ichneumon wasp in the family Ichneumonidae, described by Walsh in 1873. As a member of the genus Iseropus, it belongs to a group of parasitoid wasps whose larvae develop inside other insects. The species is native to North America and exhibits the slender body form and elongated antennae characteristic of ichneumonids.
Iseropus stercorator
Iseropus stercorator is a species of ichneumon wasp in the family Ichneumonidae. The species was described by Fabricius in 1793 based on the basionym Ichneumon stercorator. It belongs to the genus Iseropus, which contains parasitoid wasps. Records indicate presence in the Canadian prairie provinces, particularly Alberta and Saskatchewan.
Itoplectis
Itoplectis is a genus of parasitoid wasps in the family Ichneumonidae, first described by Arnold Förster in 1869. The genus contains approximately 35 to 61 recognized species with cosmopolitan distribution. Members are polyphagous solitary parasitoids that attack lepidopteran pupae and have been studied extensively for their potential as biological control agents. Several species, particularly I. conquisitor and I. naranyae, serve as model organisms for research on parasitoid behavior, learning, and chemical ecology.
Labena
Labena is a genus of ichneumon wasps in the family Ichneumonidae, subfamily Labeninae. The genus contains at least 40 described species distributed primarily in the New World. Species have been documented from North America through Central America, including the Yucatán Peninsula. Labena species are associated with wood-boring beetles, with at least one species documented in proximity to the cerambycid Callidiellum rufipenne.
Limerodops
Limerodops is a genus of ichneumon wasps established by Heinrich in 1949. The genus comprises approximately five described species distributed across northern Europe. These wasps belong to the family Ichneumonidae, a large group of parasitoid wasps.
Linycus exhortator thoracicus
Linycus exhortator thoracicus is a subspecies of ichneumonid wasp in the genus Linycus. It is an endoparasitoid, with females laying eggs in host insects using their prominent ovipositors. The subspecies has been documented in northern Europe, including Denmark, Norway, and Sweden. Like other members of the genus Linycus, it likely targets beetle larvae as hosts.
Loxodocus palloranus
Loxodocus palloranus is a species of ichneumon wasp in the family Ichneumonidae, described by Davis in 1895. It belongs to a small genus within one of the largest families of parasitoid wasps. The species is poorly documented in contemporary literature, with minimal observational records available.
Lycorina scitula
Lycorina scitula is a species of ichneumonid wasp in the genus Lycorina, first described by Cresson in 1870. It belongs to the family Ichneumonidae, one of the largest families of parasitoid wasps. The genus Lycorina is part of the diverse ichneumonid fauna of North America. Very little specific information is available about the biology or ecology of this particular species.
Lysibia mandibularis
Lysibia mandibularis is a species of ichneumon wasp in the family Ichneumonidae, first described by Provancher in 1875. The species epithet "mandibularis" suggests distinctive mandibular characteristics. It belongs to the genus Lysibia, a group of parasitoid wasps within the diverse Ichneumonidae family, one of the largest families of organisms with over 25,000 described species worldwide. The genus Lysibia is relatively small and poorly studied compared to many other ichneumonid genera.
Mastrus smithii
Mastrus smithii is a species of ichneumon wasp in the family Ichneumonidae, described by Packard in 1865. The genus Mastrus comprises parasitoid wasps, and members of this genus are known to attack the larvae of wood-boring beetles, particularly in the family Buprestidae. Very few observations of this species exist in public databases, with only one documented observation on iNaturalist as of the knowledge cutoff.
Megarhyssa greenei
Greene's Giant Ichneumonid Wasp
Megarhyssa greenei is a large ichneumonid wasp known from the United States and Canada. Females possess an elongated ovipositor used to parasitize larvae of the sawfly Tremex columba, commonly called the pigeon horntail. The species is frequently confused with the similar Megarhyssa macrurus but differs in relative ovipositor length and facial markings. Adults emerge from pupation under tree bark after approximately one year.