Chalcid
Guides
Acraspis
Acraspis is a genus of gall wasps in the family Cynipidae. Species in this genus induce distinctive galls on oak leaves (Quercus spp.), including the jewel oak gall and oak pea gall. The genus exhibits specialized host associations with oaks and has been documented to employ spacing strategies that reduce parasitoid attack rates.
Aprostocetus fidius
Aprostocetus fidius is a species of chalcid wasp in the family Eulophidae, subfamily Tetrastichinae, described by Girault in 1917. It belongs to a large genus of parasitoid wasps that are frequently associated with gall-forming insects and other arthropods. The species is recorded from several U.S. states including Florida, Illinois, Mississippi, and New Mexico. Like other members of Tetrastichinae, it is presumed to be a parasitoid, though specific host associations for this species remain poorly documented.
Aulogymnus
Aulogymnus is a genus of chalcidoid wasps in the family Eulophidae, first described by Förster in 1851. Members of this genus are small parasitoid wasps, part of a diverse family that primarily parasitizes other insects. The genus has been recorded from Europe and Asia. Specific biological details for the genus as a whole remain poorly documented in accessible literature.
parasitoidEulophidaeChalcidoideaHymenopteraPalearcticwaspsinsectsarthropodsentomologytaxonomyFörster-1851DenmarkSpainTibetChinaEuropeAsiaminute-waspschalcid-waspsEulophinaeTerebrantesApocritaHexapodaAnimaliaArthropodaInsectaAulogymnussmall-waspstiny-waspsparasitic-waspsbiological-controlinsect-parasitoidssystematicsmorphologyidentificationkeysNearcticOrientalXizangcitizen-scienceiNaturalistobservationsrecordsdistributionFörster1851genusacceptedvalidsynonymychalcidoidchalcidchalcidseulophideulophidseulophid-waspseulophinesparasitoid-waspsparasitic-Hymenopterabiological-control-agentsinsect-diversitybiodiversityfaunaentomologicalhymenopteranarthropodhexapodhexapodspterygotepterygotesendopterygoteendopterygotesholometabolousholometabolatiny-insectsminute-insectssmall-insectsmicrohymenopteramicro-waspsmicro-parasitoidsmicro-chalcidsmicro-eulophidswing-venationantennaethoraxdiagnostic-characterstaxonomic-keysidentification-keysgeneric-keysNearctic-faunaEuropean-faunaAsian-faunaTibetan-faunaSpanish-faunaDanish-faunapoorly-knowndata-deficientunderstudiedcryptic-diversityhost-unknownbiology-unknownlife-history-unknownecology-unknowndistribution-recordsoccurrence-recordsspecimen-recordsmuseum-recordsdatabase-recordsGBIFCatalogue-of-LifeNCBIWikipediaUniversal-Chalcidoidea-DatabaseKey-to-Nearctic-eulophid-generaliteraturesourcesreferencescitationsbibliographyoriginal-descriptiontype-speciestype-localitynomenclaturesystematic-entomologyhymenopterologychalcidologyparasitologybiological-control-researchintegrated-pest-managementIPMagricultural-entomologyforest-entomologymedical-entomologyveterinary-entomologyurban-entomologyconservation-entomologyinsect-ecologycommunity-ecologypopulation-ecologybehavioral-ecologyevolutionary-ecologyphylogeneticsphylogenymolecular-systematicsDNA-barcodingtaxonomy-and-phylogenyclassificationbiodiversity-informaticsbiogeographyhistorical-biogeographyphylogeographydispersalvicariancespeciationdiversificationevolutionadaptationnatural-selectionsexual-selectionlife-history-evolutionhost-parasitoid-interactionscoevolutiontritrophic-interactionsfood-websecosystem-servicesnatural-enemiesbiocontrolaugmentative-biological-controlclassical-biological-controlconservation-biological-controlinvasive-species-managementpest-managementsustainable-agricultureorganic-farmingagroecologyecosystem-healthenvironmental-monitoringbioindicatorsindicator-speciesclimate-changeglobal-changehabitat-lossfragmentationconservation-statusIUCNred-listnot-evaluatedresearch-needsknowledge-gapsfuture-researchprioritiesspecimen-collectionvoucheringmuseum-collectionsnatural-history-collectionsdigitizationdata-sharingopen-scienceFAIR-principlescitizen-science-contributionscommunity-sciencepublic-engagementscience-communicationeducationoutreachnatural-historyinsect-watchingwasp-watchingnature-observationbiodiversity-appreciationCeraptroceroideus
Ceraptroceroideus is a genus of parasitoid wasps in the family Encyrtidae, first described by Girault in 1916. Members of this genus are small chalcid wasps, part of a large group of parasitoids that attack other insects. The genus is rarely encountered in scientific literature and field observations, with only four observations recorded on iNaturalist as of the source data. Encyrtid wasps in general are important biological control agents, though species-specific biology for Ceraptroceroideus remains poorly documented.
Chrysonotomyia auripunctata
Chrysonotomyia auripunctata is a parasitoid wasp in the family Eulophidae, first described by Ashmead in 1894 from Florida. The species is characterized by golden-yellow body coloration with dark punctate markings. It belongs to a genus of minute chalcid wasps that are understudied but likely associated with gall-forming insects on oaks and other plants.
Eunotus
Eunotus is a genus of chalcid wasps in the family Eunotidae, first described by Walker in 1834. Most species are parasitoids of scale insects (Coccoidea), including coccid scales, felt scales (Eriococcidae), and mealybugs. The genus has a wide geographic distribution spanning the Palearctic, Nearctic, and Oriental regions, with records from Europe, Asia, and North America. Species exhibit morphological traits typical of the family, including distinctive antennal structure and thoracic sculpture.
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.
Hemadas
Hemadas is a genus of small chalcidoid wasps in the family Ormyridae, established by Crawford in 1909. The genus contains gall-inducing species, most notably Hemadas nubilipennis, which forms distinctive kidney-shaped (reniform), multichambered stem galls on lowbush blueberry (Vaccinium angustifolium). These wasps exhibit a rare behavioral trait: females damage host plant tissues after oviposition to benefit offspring. Research has demonstrated that galls induced by Hemadas species accumulate environmental contaminants at concentrations significantly higher than surrounding plant tissues, suggesting potential applications in environmental monitoring.
Hockeria rubra
Hockeria rubra is a species of chalcid wasp in the family Chalcididae, subfamily Haltichellinae. Described by Ashmead in 1894, this species belongs to a genus of parasitoid wasps. The specific epithet "rubra" (Latin for red) suggests reddish coloration, though detailed morphological descriptions are limited in available sources. Records indicate occurrence in Texas and Mexico.
Notanisomorphella
Notanisomorphella is a genus of chalcid wasps in the family Eulophidae, established by Girault in 1913. Members are parasitoids with documented hosts including case-bearer moths (Coleophoridae), leaf-mining beetles, and spider eggs. The genus is poorly known, with only two observations recorded on iNaturalist.
Omphale obscurinotata
Omphale obscurinotata is a species of chalcid wasp in the family Eulophidae, first described by Girault in 1916. The genus Omphale comprises parasitoid wasps, though specific biological details for this species remain poorly documented. It has been recorded in North America, including the United States and Canada.
Oodera
Oodera is the sole genus in the monotypic family Ooderidae, a group of chalcidoid wasps elevated to family rank in 2022. Species range from 3.6 to 17 mm and are distinguished by raptorial forelegs and a mantis-like habitus. Almost all species are parasitoids of xylophagous beetle larvae in families Buprestidae and Curculionidae. The genus occurs in warm regions of the Palearctic, Afrotropical, and Indomalayan realms, with one introduced species in the Nearctic.
Ormyrus
Ormyrus is a genus of small chalcid wasps in the family Ormyridae, containing approximately 145 described species. These wasps are parasitoids primarily associated with gall-forming insects, including cynipid gall wasps, chalcid wasps, gall midges, and tephritid fruit flies. The genus exhibits significant cryptic diversity, as demonstrated by the case of Ormyrus labotus, long considered a single generalist species attacking over 65 host species, but now recognized as a complex of at least 16–18 genetically distinct, morphologically identical specialist species. Ormyrus species are found across the Old World and North America.
Pnigalio maculipes
Pnigalio maculipes is a species of parasitoid wasp in the family Eulophidae, first described by Crawford in 1913. The genus Pnigalio comprises small chalcid wasps known as parasitoids of various insect hosts. Species in this genus are typically associated with leaf-mining insects and other herbivorous arthropods. The specific epithet 'maculipes' refers to spotted legs, a morphological trait characteristic of this species.
Sycophila
Sycophila is a genus of chalcid wasps in the family Eurytomidae, comprising approximately 120 described species. Members of this genus have a cosmopolitan distribution and are primarily associated with figs and the galls of various insects, including gall wasps and gall midges. The genus is morphologically distinctive within Eurytomidae and plays roles as both plant-feeders and parasitoids of herbivorous insects.