Hymenoptera
Guides
Esagonatopus niger
Esagonatopus niger is a species of dryinid wasp in the family Dryinidae, an aculeate hymenopteran group. Dryinidae are parasitoid wasps known for their distinctive morphology, including chelate (pincer-like) forelegs in females used to capture hosts. The genus Esagonatopus belongs to this family of solitary wasps that develop as parasitoids of Hemiptera, particularly leafhoppers and planthoppers. The species epithet 'niger' refers to its black coloration.
Eucera actuosa
Eucera actuosa is a species of long-horned bee in the family Apidae. It was described by Cresson in 1879 and is found in North America. As a member of the genus Eucera, it belongs to a group of solitary bees commonly known as squash bees due to their specialized pollination of cucurbit crops. The species is part of the tribe Eucerini, which is characterized by males with notably long antennae.
Eucera frater albopilosa
White-haired Monk Longhorn
Eucera frater albopilosa is a subspecies of long-horned bee in the family Apidae. It belongs to the genus Eucera, a group of solitary bees commonly known as squash bees or long-horned bees due to the exceptionally long antennae of males. The subspecies is recognized as valid and has been documented in North America. Like other Eucera species, it is likely associated with pollination of flowering plants, though specific ecological details for this subspecies remain limited in published sources.
Eucera fulvitarsis fulvitarsis
Eucera fulvitarsis fulvitarsis is a subspecies of long-horned bee in the family Apidae. It belongs to the tribe Eucerini, a group of solitary bees characterized by males with notably long antennae. The subspecies was described by Cresson in 1879 and is native to North America. Like other Eucera species, it is a specialist pollinator associated with cucurbit crops and other flowering plants.
Eucera hamata
Hook-spurred Longhorn
Eucera hamata is a long-horned bee in the family Apidae, found in North America. Males possess exceptionally long antennae, a characteristic trait of the genus Eucera. The species belongs to a group of solitary bees that nest underground and forage primarily on legume flowers.
Eucera lutziana
Eucera lutziana is a species of long-horned bee in the family Apidae, described by Cockerell in 1933. As a member of the genus Eucera, it belongs to the tribe Eucerini, a group of solitary bees commonly known as long-horned bees due to the exceptionally long antennae of males. The species is recorded from North America, though specific details about its biology and ecology remain limited in published sources.
Eucerceris bitruncata
Eucerceris bitruncata is a species of weevil wasp in the family Crabronidae, described by Scullen in 1939. The genus Eucerceris is part of the tribe Cercerini, commonly known as weevil wasps for their specialized predation on weevils (Curculionidae). This species occurs in North America. Very few observations exist in public databases, with only two records documented on iNaturalist.
Eucerceris provancheri
Eucerceris provancheri is a species of solitary wasp in the tribe Cercerini (Philanthinae, Crabronidae). Like other members of the genus Eucerceris, it is a weevil wasp that hunts weevils (Curculionidae) to provision nests for its larvae. The species occurs in Central America and North America.
Eucerceris superba
Eucerceris superba is a species of solitary wasp in the family Crabronidae (formerly placed in Philanthidae). It is native to North America, with records from Canada and the United States. The genus Eucerceris was revised by entomologist George R. Ferguson, who specialized in the taxonomy of these wasps.
Eucharitinae
Eucharitinae is a subfamily of chalcid wasps within Eucharitidae, established by Walker in 1846. Members are parasitoids of ants, with larvae developing inside ant colonies after being transported by worker ants. The subfamily is distinguished by specialized life history adaptations involving ant host exploitation.
Eucoilini
Eucoilini is a tribe of small parasitoid wasps within the family Figitidae. Members are known primarily for their association with Drosophila fruit flies as hosts. The tribe contains genera such as Ganaspis and Leptopilina, which have been extensively studied in behavioral ecology and host-parasitoid interactions. These wasps are characterized by reduced wing venation and distinctive larval development inside host puparia.
Euderomphale
Euderomphale is a genus of minute parasitoid wasps in the family Eulophidae, first described by Girault in 1916. Members of this genus belong to the subfamily Entedoninae, a group characterized by their small size and parasitic lifestyle on other insects. The genus is part of the hyperdiverse chalcidoid wasp radiation, though specific biological details remain poorly documented.
Euderus albitarsis
Euderus albitarsis is a parasitic wasp in the family Eulophidae, belonging to the subgenus Euderus s. str. and forming the namesake of the 'albitarsis species group' within the genus. It was originally described by Zetterstedt in 1838 under the basionym Entedon albitarsis. The species has been recorded from Canada (Alberta, Manitoba) and the Canary Islands.
Eulophus anomocerus
Eulophus anomocerus is a species of parasitoid wasp in the family Eulophidae. The genus Eulophus comprises small chalcidoid wasps known primarily as ectoparasitoids of Lepidoptera larvae. This species was described by Crawford in 1912 and has been recorded in several Canadian provinces. As with most Eulophidae, the species likely exhibits koinobiont parasitoid biology, allowing the host to continue developing while the parasitoid feeds.
Eumenes bollii
Boll's Potter Wasp
Eumenes bollii, commonly known as Boll's Potter Wasp, is a solitary potter wasp in the family Vespidae. The species is named for its distinctive nest construction: females craft small, urn-shaped mud cells resembling miniature pottery. These nests are provisioned with paralyzed caterpillars that serve as food for the developing larva. The wasp is part of the diverse Eumeninae subfamily, which includes many species with similar mud-nesting behaviors.
Eumenes verticalis
Vertical potter wasp
Eumenes verticalis is a solitary potter wasp in the subfamily Eumeninae, known for constructing distinctive urn-shaped mud nests. Females build marble-sized clay vessels with fluted necks, provision them with paralyzed caterpillars, and lay a single egg inside before sealing the nest with a mud plug. The larva develops within, feeding on the fresh prey, then pupates and emerges by chewing an exit hole in the side of the pot. Like other solitary wasps, it poses minimal sting risk to humans.
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Euodynerus apopkensis is a mason wasp in the subfamily Eumeninae, family Vespidae. As a member of the genus Euodynerus, it shares the characteristic blocky, angular thorax typical of this group. The species is one of numerous North American Euodynerus, though specific biological details remain poorly documented in published literature. Like other mason wasps, females likely nest in pre-existing cavities and provision cells with paralyzed caterpillars for their larval offspring.
Euodynerus auranus
Euodynerus auranus is a species of solitary mason wasp in the subfamily Eumeninae. It is recognized as a valid species with four described subspecies: E. a. albivestis, E. a. aquilus, E. a. auranus, and E. a. azotopus. As a member of the genus Euodynerus, it shares the characteristic stinging capability and solitary nesting behavior typical of mason wasps.
Euodynerus bidens
Euodynerus bidens is a solitary mason wasp in the subfamily Eumeninae, characterized by distinctive mandibular morphology with two teeth. The species is part of a widespread North American genus known for nesting in pre-existing cavities and provisioning nests with paralyzed caterpillars. Like congeners, it likely serves as a biological control agent for pest moth larvae.
Euodynerus exoglyphus
Euodynerus exoglyphus is a mason wasp in the subfamily Eumeninae, described by Bohart in 1939. Like other members of the genus Euodynerus, it is a solitary wasp that provisions nests with paralyzed caterpillars for its larval offspring. The species is part of a diverse genus of potter and mason wasps found across North America.
Euodynerus megaera
Euodynerus megaera is a solitary mason wasp in the family Vespidae, subfamily Eumeninae. The species was described by Lepeletier in 1841. Like other members of the genus, it is a predatory wasp that provisions nests with paralyzed caterpillars for its larval offspring.
Euodynerus undescribed-f
An undescribed species of mason wasp in the genus Euodynerus, family Vespidae. As with other members of this genus, it is a solitary wasp that provisions nests with paralyzed caterpillars for its larval offspring. The specific identity and distinguishing characteristics of this taxon remain undocumented pending formal scientific description.
Euparagia scutellaris
Euparagia scutellaris is a species of potter wasp in the family Vespidae, subfamily Masarinae. It is native to the western United States. The species was described by Cresson in 1879 and is currently treated as a synonym of Euparagia maculiceps by some authorities, though both names remain in use. Larvae are known to feed on weevil larvae.
Eupelmus
Eupelmus is a large genus of chalcidoid wasps in the family Eupelmidae, comprising over 330 species with cosmopolitan distribution. Species exhibit dual life histories: most are ectoparasitoids attacking larval and nymphal stages of diverse holometabolous insects, while some are phytophagous with larvae feeding on plant tissues. The genus has been subject to extensive taxonomic revision, with molecular studies challenging the traditional three-subgenus classification (Eupelmus, Episolindelia, Macroneura) in favor of approximately twelve species groups. Several species have demonstrated potential for biological control of agricultural pests.
Eupelmus cynipidis
Eupelmus cynipidis is a parasitic wasp in the family Eupelmidae, subgenus Eupelmus (Eupelmus). The species was described by Ashmead in 1882. A taxonomic revision synonymized Eupelmus quercus under this name. The species is recorded from Florida and Louisiana.
Eupelmus dryohizoxeni
Eupelmus dryohizoxeni is a species of parasitoid wasp in the family Eupelmidae. Like other members of the genus Eupelmus, this species possesses a highly specialized, flexible ovipositor adapted for drilling into substrates to access hosts. The genus Eupelmus includes species known for exceptional drilling capabilities, with some able to penetrate materials beyond natural plant tissues.
Eupelmus meteori
Eupelmus meteori is a species of parasitoid wasp in the family Eupelmidae, first described by Gahan in 1913. It belongs to a genus known for gall-associated parasitoid biology. The species is accepted in the Catalogue of Life and iNaturalist taxonomic databases, though direct observational records remain sparse.
Euperilampus
Euperilampus is a genus of chalcid wasps in the family Perilampidae, first described by Walker in 1871. The genus comprises approximately 18 described species. These wasps belong to the superfamily Chalcidoidea, a diverse group of small parasitic wasps. Members of this genus are known primarily from taxonomic descriptions and museum specimens, with limited ecological documentation available.
Euphorinae
The Euphorinae are a large subfamily of Braconidae parasitoid wasps comprising over 1,270 described species worldwide. They are characterized as koinobiont endoparasitoids, typically attacking adult insects or nymphs of hemimetabolous hosts—a notably broad host range among parasitoid wasps. The subfamily is sister to the Meteorinae and has been used in biological pest control programs.
Eurhopalothrix floridana
Eurhopalothrix floridana is a species of ant in the subfamily Myrmicinae, originally described by Brown & Kempf in 1960. It belongs to the genus Eurhopalothrix, a group of small, cryptic ants within the Attini tribe. The species is known from the Dominican Republic, with records from the Jardín Botánico Nacional in Santo Domingo de Guzmán. Very little biological information has been published about this species; it has been mentioned in taxonomic literature primarily in comparative studies of male morphology.
Eurytoma hecale
Eurytoma hecale is a species of chalcid wasp in the family Eurytomidae. The species was described by Walker in 1843. As a member of the genus Eurytoma, it is likely a parasitoid or seed-feeding wasp, though specific biological details for this species remain poorly documented. The genus Eurytoma contains numerous species associated with galls, seeds, and other insects as hosts.
Eusapyga verticalis
Eusapyga verticalis is a species of sapygid wasp in the family Sapygidae. Sapygid wasps are cleptoparasitic, meaning females lay eggs in the nests of other solitary bees and wasps, where their larvae consume the host's provisions. The species is part of a small family of wasps that are relatively poorly studied compared to their better-known relatives in the families Mutillidae and Scoliidae.
Eusemion
Eusemion is a genus of parasitoid wasps in the family Encyrtidae, first described by Dahlbom in 1857. The genus is represented in the UCR Encyrtidae collection by specimens identified as Eusemion longipennis (Ashmead) and additional undetermined species. Encyrtidae are small chalcidoid wasps that parasitize other insects, particularly scale insects and other Hemiptera. The family is one of the most species-rich groups within Chalcidoidea, with the UCR collection containing representatives of 261 valid genera.
Euspilotus incertus
Euspilotus incertus is a species of parasitoid wasp in the family Encyrtidae. The genus Euspilotus comprises small chalcidoid wasps, and this species is documented in the extensive Encyrtidae collection at the University of California, Riverside (UCR). The specific epithet "incertus" (Latin for "uncertain") suggests historical taxonomic ambiguity regarding its placement or identification. Members of this genus are known to parasitize scale insects and other homopteran pests.
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.
Euura appalachia
Euura appalachia is a species of sawfly in the family Tenthredinidae, subfamily Nematinae. The species name suggests an association with the Appalachian region of eastern North America. As a member of the genus Euura, it belongs to a group commonly known as willow sawflies, many of which are specialized feeders on willow species (Salix). Specific biological details for E. appalachia remain poorly documented in available literature.
Euura poecilonota
Marbled Birch Nematine
Euura poecilonota is a species of sawfly in the family Tenthredinidae, commonly known as the Marbled Birch Nematine. It belongs to the large and diverse genus Euura, which comprises numerous species associated with willows and other woody plants. The species was originally described by Zaddach in 1876 under the name Nematus poecilonotus. Like other nematine sawflies, this species is likely associated with birch (Betula) as a host plant, though specific biological details remain poorly documented in available literature.
Euura ventralis
Willow Sawfly
Euura ventralis is a sawfly species in the family Tenthredinidae, commonly known as the Willow Sawfly. It is native to North America and has been recorded across multiple Canadian provinces including Alberta, British Columbia, Manitoba, and Ontario. As a member of the genus Euura, it is associated with willow (Salix) host plants. The species was first described by Thomas Say in 1824.
Evagetes mohave
Evagetes mohave is a species of spider wasp in the family Pompilidae, described by Nathan Banks in 1933. The genus Evagetes is characterized by a blocky, robust thorax that distinguishes it from the related genus Aporus, which has a more streamlined thorax that slopes gradually toward the head. Members of the genus Evagetes share with Aporus relatively short and thick antennae. The species epithet 'mohave' suggests an association with the Mojave Desert region of southwestern North America.
Evagetes padrinus minusculus
Evagetes padrinus minusculus is a subspecies of spider wasp in the family Pompilidae. It was described by Banks in 1910. The genus Evagetes belongs to the spider wasp family, whose females paralyze spiders to provision nests for their larvae. Members of this genus can be distinguished from the unrelated genus Aporus by their blockier thorax morphology.
Evagetes parvus
Evagetes parvus is a small spider wasp in the family Pompilidae, first described by Cresson in 1865. Members of the genus Evagetes are characterized by relatively short, thick antennae and a blocky, robust thorax that distinguishes them from the streamlined genus Aporus, which shares similar antennae proportions. The species is part of the diverse spider wasp fauna of North America.
Evaniella
Evaniella is a genus of ensign wasps (family Evaniidae) established by Bradley in 1905. The genus contains more than 70 described species, making it one of the larger genera within its family. Members of this genus share the characteristic ensign wasp body plan, including the distinctive laterally compressed abdomen that gives the family its common name.
Exallonyx obsoletus
Exallonyx obsoletus is a species of parasitoid wasp in the family Proctotrupidae, described by Thomas Say in 1836. Members of this family are typically small, dark-colored wasps that parasitize the larvae of beetles and other insects. The genus Exallonyx comprises numerous species, many of which remain poorly studied. Specific biological details for E. obsoletus are limited in available literature.
Exenterus 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.
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 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 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.
Exomalopsis tibialis
Exomalopsis tibialis is a species of bee in the family Apidae, described by Timberlake in 1980. It belongs to the tribe Exomalopsini, a group of small to medium-sized bees commonly known as oil-collecting bees due to their specialized floral associations. The species is known from Middle America and North America.
Exon
Exon is a genus of parasitoid wasps in the family Platygastridae, described by Masner in 1980. These are minute wasps that develop as parasitoids of insect eggs. The genus is currently classified as taxonomically doubtful (DOUBTFUL status in GBIF), indicating uncertainty about its validity or circumscription. Platygastridae as a whole are understudied, and detailed biological information for this genus is extremely limited.