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Entedoninae
Entedoninae is a subfamily of chalcid wasps in the family Eulophidae comprising over 90 genera. Members are primarily parasitoids with documented associations across diverse host groups including gall-inducing insects, leafminers, sawflies, thrips, and ants. The subfamily exhibits considerable morphological and ecological diversity, with species found in tropical to temperate habitats worldwide.
parasitoid biological-control gall-associated leafminer-parasitoid Chalcidoidea Hymenoptera Eulophidae Entedoninae tropical-forest agricultural-pest-control sawfly-parasitoid thrips-parasitoid ant-associated rice-pest Cecidomyiidae Tenthredinidae Pontania Closterocerus Ceranisus Afronympha Ametallon Chrysonotomyia Omphale-genus-group canopy understorey ecological-plasticity Bangladesh Panama Africa New-Zealand Europe Senegal South-Africa Democratic-Republic-of-the-Congo Uganda endoparasitoid larval-parasitoid egg-parasitoid host-specificity forest-habitat degraded-habitat mid-altitude-rainforest lowland-rainforest tropical-America classical-biological-control augmentative-biological-control integrated-pest-management rice-hispa Dicladispa-armigera gall-wasp sawfly-gall leafminer ant-symbiosis Formicidae Khaya-senegalensis Ochna-pulchra morphological-taxonomy molecular-taxonomy 28S-rDNA COI CytB new-species-description generic-revision host-range parasitoid-complex food-web ecosystem-service natural-enemy pest-management entomophagous hyperparasitoid inquiline curculionid Apion-minimum Phyllocolpa-leucosticta Chrysocharis Entedon Asecodes Pleurotroppopsis Afrotroppopsis Zaommomentedon Apleurotropis Kratoysma Platocharis Schizocharis Parahorismenus Atullya Tropicharis Chrysochuris cruy mirabilis oryzamyntor eminpashai carinatum dussiae longicaudata machaeriae unimaculata claviger gorgonaense auripunctata galbina laeviscuta phenacapsia cecvora elongata pontaniae heyeri risbeci milletiae newbyi Förster-1856 Chalcidoidea-phylogeny biodiversity species-richness cryptic-species molecular-diagnostics host-plant-association habitat-specificity canopy-fauna understorey-fauna forest-stratification tropical-biodiversity Afrotropical Neotropical Palaearctic Nearctic Oriental Australasian Pacific Holarctic biogeography taxonomic-revision annotated-key catalogue type-specimen museum-collection slide-mounted-specimens morphometrics genitalia wing-venation antennae clypeus mandibles malar-space scape pedicel flagellum gaster vertex suture color-pattern pale-femora dark-gaster sexual-dimorphism male female ovipositor emergence rearing quarantine field-collection foreign-exploration augmentative-release pesticide-resistance sustainable-agriculture food-security rice-production cereal-pest vegetable-pest fruit-pest ornamental-pest forest-pest urban-pest invasive-species native-range introduced-range establishment spread impact non-target-effects host-specificity risk-assessment environmental-safety regulatory-approval research-symposium proceedings peer-reviewed Zootaxa ZooKeys Insect-Systematics-&-Evolution Australian-Journal-of-Entomology Far-Eastern-Entomologist Russian-Entomological-Journal Belgian-Journal-of-Entomology Florida-Entomologist Pan-Pacific-Entomologist Entomological-News Proceedings-of-the-Hawaiian-Entomological-Society Transactions-of-the-American-Entomological-Society Journal-of-Natural-History 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sustainable-intensification agroecology conservation-biological-control habitat-management floral-resources refuge buffer-zone landscape-complexity connectivity spillover natural-enemy-diversity food-web-structure trophic-interactions multitrophic indirect-effects trait-mediated density-dependent inverse-density-dependent functional-response numerical-response searching-efficiency handling-time oviposition-behavior host-selection host-acceptance host-suitability host-quality host-stage-preference egg-load progeny-allocation sex-ratio local-mate-competition sib-mating inbreeding fitness longevity fecundity development-time thermal-requirements degree-days phenology synchrony asynchrony seasonal-adaptation diapause quiescence cold-hardiness heat-tolerance desiccation-resistance starvation-resistance dispersal flight walking foraging patch-use area-restricted-search oviposition-marking host-marking superparasitism multiparasitism intraguild-predation hyperparasitism autoparasitism heteronomous-hyperparasitism facultative-hyperparasitism obligate-hyperparasitism primary-parasitoid secondary-parasitoid tertiary-parasitoid mummy aphid-mummy scale-mummy pupal-parasitoid egg-larval-parasitoid larval-pupal-parasitoid idiobiont koinobiont ectoparasitoid solitary gregarious polyembryony thelytoky arrhenotoky diploid haplodiploid chromosome-number genome-size transcriptome proteome metabolome morphome phenome extended-phenotype niche-construction ecosystem-engineering keystone-species ecosystem-service-provider functional-group guild trophic-level energy-flow nutrient-cycling decomposition predation herbivory parasitism mutualism commensalism competition apparent-competition exploitative-competition interference-competition scramble-competition contest-competition resource-partitioning niche-differentiation character-displacement co-evolution arms-race Red-Queen geographic-mosaic local-adaptation phenotypic-plasticity genetic-adaptation epigenetics transgenerational-effects maternal-effects paternal-effects parental-care mating-system sexual-selection sperm-competition cryptic-female-choice mate-choice lek territory aggression alarm defense venom allomone kairomone synomone semiochemical pheromone trail-pheromone alarm-pheromone aggregation-pheromone sex-pheromone marking-pheromone oviposition-deterrent host-marking-pheromone plant-volatile induced-plant-defense systemic-acquired-resistance induced-systemic-resistance priming volatile-organic-compound green-leaf-volatile terpenoid phenylpropanoid jasmonic-acid salicylic-acid ethylene abscisic-acid gibberellin auxin cytokinin brassinosteroid strigolactone nitric-oxide reactive-oxygen-species hypersensitive-response programmed-cell-death autophagy apoptosis necrosis pathogen-associated-molecular-pattern damage-associated-molecular-pattern pattern-recognition-receptor effector-triggered-immunity gene-for-gene avirulence virulence effector toxin phytotoxin mycotoxin bacterial-toxin viral-toxin insecticidal-protein cry-protein vip-protein cyt-protein spore conidium appressorium haustorium mycelium sclerotium fruiting-body basidiocarp ascocarp perithecium cleistothecium pycnidium acervulus sporodochium symptom sign disease-triangle disease-cycle epidemic endemic pandemic outbreak eradication containment management control prevention forecasting warning-system decision-support-system expert-system model simulation economic-threshold economic-injury-level action-threshold treatment-threshold damage-threshold aesthetic-injury-level cultural-control physical-control mechanical-control chemical-control genetic-control sterile-insect-technique incompatible-insect-technique precision-agriculture site-specific-management variable-rate-application remote-sensing geographic-information-system global-positioning-system unmanned-aerial-vehicle drone sensor imaging spectroscopy machine-learning artificial-intelligence deep-learning neural-network computer-vision image-analysis pattern-recognition classification segmentation detection tracking counting sampling sampling-plan sequential-sampling binomial-sampling presence-absence-sampling fixed-precision-sampling variable-precision-sampling spatial-sampling temporal-sampling stratified-sampling cluster-sampling systematic-sampling random-sampling convenience-sampling judgment-sampling expert-sampling quota-sampling snowball-sampling respondent-driven-sampling capture-recapture mark-recapture mark-resight distance-sampling line-transect point-transect strip-transect plot quadrat pitfall-trap Malaise-trap pan-trap water-pan yellow-pan blue-pan white-pan flight-interception-trap window-trap canopy-fogging beating-tray sweep-net aerial-net ground-net aquatic-net D-vac vacuum-sampler aspirator mouth-aspirator mechanical-aspirator berlese-funnel Tullgren-funnel Winkler-extractor pitfall barber-trap pitfall-array drift-fence funnel-trap light-trap UV-light black-light mercury-vapor sodium-vapor LED actinic color-trap sticky-trap pheromone-trap synthetic-pheromone natural-pheromone kairomone-trap food-bait protein-bait sugar-bait fermentation-bait alcohol-bait vinegar-bait molasses-bait fruit-bait meat-bait fish-bait dung-bait carrion-bait decoy lure attractant repellent deterrent antifeedant oviposition-stimulant arrestant suppressant toxicant stomach-poison contact-poison fumigant systemic translaminar residual persistent non-persistent broad-spectrum narrow-spectrum selective non-selective target-specific host-specific mode-of-action nerve-poison acetylcholinesterase-inhibitor GABA-antagonist sodium-channel-modulator nicotinic-acetylcholine-receptor-agonist ryanodine-receptor-modulator chitin-synthesis-inhibitor juvenile-hormone-mimic ecdysone-agonist microbial-pesticide entomopathogenic-nematode entomopathogenic-fungus entomopathogenic-bacterium entomopathogenic-virus entomopathogenic-protozoa Bacillus-thuringiensis Bt Bacillus-sphaericus Paenibacillus-popilliae Serratia-entomophila Metarhizium-anisopliae Beauveria-bassiana Lecanicillium-lecanii Isaria-fumosorosea Nomuraea-rileyi Hirsutella-thompsonii Entomophthora Neozygites Nosema Vairimorpha Thelohania Anticarsia-gemmatalis-nucleopolyhedrovirus AgMNPV Cydia-pomonella-granulovirus CpGV Spodoptera-exigua-multiple-nucleopolyhedrovirus SeMNPV Autographa-californica-multiple-nucleopolyhedrovirus AcMNPV nucleopolyhedrovirus granulovirus cypovirus entomopoxvirus iridovirus parvovirus tetravirus nodavirus reovirus picornavirus iflavirus densovirus birnavirus totivirus partitivirus hypovirulence mycovirus bacteriophage phage transduction conjugation transformation horizontal-gene-transfer vertical-gene-transfer mobile-genetic-element transposon plasmid integron genomic-island pathogenicity-island symbiosis-island metabolic-island resistance-island virulence-factor antibiotic-resistance insecticide-resistance acaricide-resistance herbicide-resistance fungicide-resistance bactericide-resistance nematicide-resistance molluscicide-resistance rodenticide-resistance resistance-management resistance-monitoring resistance-detection resistance-diagnosis resistance-mechanism metabolic-resistance target-site-resistance penetration-resistance behavioral-resistance cross-resistance multiple-resistance negative-cross-resistance synergism antagonism potentiation safener adjuvant surfactant spreader sticker extender buffer acidifier defoamer drift-retardant rainfastness UV-protectant formulation emulsifiable-concentrate wettable-powder water-dispersible-granule suspension-concentrate capsule-suspension microencapsulation nanotechnology controlled-release slow-release attract-and-kill sterile-insect-release inundative-release inoculative-release conservation augmentation classical neoclassical new-association targeted area-wide suppression protection production integrated-crop-management integrated-production organic-farming biodynamic-farming permaculture agroforestry silvopasture climate-smart-agriculture 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Epeoloides
Macropis Cuckoo Bee
Epeoloides is a genus of kleptoparasitic (cuckoo) bees in the family Apidae, tribe Osirini. The genus comprises two known species: Epeoloides coecutiens (Fabricius, 1775) in Europe and Epeoloides pilosulus (Cresson, 1878) in North America. Both species are nest parasites of oil-collecting bees in the genus Macropis (Melittidae), which themselves are specialized pollinators of oil-producing flowers in the genus Lysimachia. This tripartite ecological dependency—between flower, host bee, and parasite—makes Epeoloides one of the rarest and most vulnerable bee genera in the Holarctic region.
kleptoparasite cuckoo-bee Macropis Lysimachia oil-collecting-bees rare-bees conservation Holarctic Osirini cleptoparasite
Epichlorops
grass flies
Epichlorops is a genus of small flies in the family Chloropidae, commonly known as grass flies. The genus was established by Becker in 1910 and contains at least five described species distributed across the Holarctic region, with records from Europe, North America, and China. Species in this genus are associated with grassland habitats. The genus is taxonomically placed within the tribe Chloropini, subfamily Chloropinae.
Chloropidae grass-flies Diptera Holarctic grassland
Epinotia cinereana
Grey Aspen Bell
Epinotia cinereana is a Holarctic tortricid moth in the tribe Eucosmini, resurrected from synonymy with E. nisella in 2012 based on DNA barcoding, genital morphology, and life history differences. It occurs across Europe and North America, with moderate intraspecific genetic variation between continents but no correlated morphological differences. The species was previously hidden under the name E. nisella, a highly variable species with which it had been conflated for decades.
Lepidoptera Tortricidae Olethreutinae Eucosmini Holarctic resurrected-species DNA-barcoding cryptic-species
Epinotia nisella
Grey Poplar Bell, Yellow-headed Aspen Leaftier
Epinotia nisella is a small tortricid moth with a Holarctic distribution across northern Eurasia and northern North America. First described by Clerck in 1759, it is highly polymorphic in forewing coloration, showing extensive variation in grey, black, and brown patterns. The species is closely related to E. cinereana, from which it was recently reinstated as distinct based on DNA barcodes and genital morphology. Larvae feed on catkins and leaves of Populus and Salix species.
Tortricidae Olethreutinae leafroller Populus-feeder Salix-feeder Holarctic polymorphic genome-sequenced
Epirrhoe
Epirrhoe is a genus of moths in the family Geometridae, subfamily Larentiinae, containing approximately 17 described species distributed across the Holarctic region. The genus was established by Jacob Hübner in 1825. Species within this genus are generally small to medium-sized geometrid moths, many with characteristic wing patterns featuring contrasting dark and light markings. The Small Argent and Sable (Epirrhoe tristata) is among the better-known species, with a published chromosomally complete genome assembly.
geometridae larentiinae genome-sequenced holarctic
Episernus
Episernus is a genus of small beetles in the family Ptinidae, distributed across the Holarctic region with western populations in North America. The genus comprises approximately 13 described species, primarily associated with coniferous habitats. Episernus is taxonomically close to Ernobius but is distinguished by morphological features of the pronotum and antennae.
conifer-associated Holarctic Ptinidae small-beetles forest-fauna
Epistrophe grossulariae
Black-horned Smoothtail
Epistrophe grossulariae is a Holarctic hoverfly species in the family Syrphidae, commonly known as the Black-horned Smoothtail. It is a medium-sized syrphid fly with distinctive morphological features that distinguish it from congeners. The species has been well-documented across Europe with substantial observational records.
hoverfly syrphid pollinator aphid-predator Holarctic Europe woodland
Epistrophe nitidicollis
Straight-banded Smoothtail
Epistrophe nitidicollis is a hoverfly species with a broad Holarctic distribution spanning Europe, North America, and northern Asia. Adults are medium-sized with distinctive yellow facial markings and a black-and-yellow banded abdomen. The species is strongly associated with deciduous woodland habitats where larvae prey on aphids. Adults visit diverse flowering plants including umbellifers and early spring bloomers.
hoverfly Syrphidae Holarctic aphid-predator deciduous-forest spring-flyer
Epuraea aestiva
Epuraea aestiva is a species of sap-feeding beetle in the family Nitidulidae. It has been recorded as an inquiline in nests of the bumble bee Bombus derhamellus, where its larvae and pupae develop. The species is widely distributed across the Holarctic region, including Europe, Northern Asia (excluding China), and North America.
sap-feeding-beetle inquiline Nitidulidae Holarctic Bombus-associate larva-described pupa-described
Epuraea linearis
Epuraea linearis is a small sap-feeding beetle in the family Nitidulidae, measuring 2.7–3.0 mm in length. The species has a Holarctic boreal and montane distribution, occurring across northern North America from Alaska and Canada southward to the western and northeastern United States. Adults are active from May through September and have been associated with coniferous hosts, particularly pine and spruce.
sap-feeding-beetle conifer-associated boreal montane Holarctic
Epuraea rufomarginata
Epuraea rufomarginata is a small beetle species in the family Nitidulidae (sap beetles), first described by Stephens in 1830. The species has a Holarctic distribution, occurring in both Europe and North America. As a member of the genus Epuraea, it belongs to a group of beetles commonly associated with fermenting plant materials, fungi, and decaying organic matter. The specific epithet "rufomarginata" suggests reddish marginal coloration, though detailed morphological descriptions are limited in the available sources.
Nitidulidae sap-beetle Holarctic Stephens-1830
Epuraea terminalis
Epuraea terminalis is a small sap-feeding beetle in the family Nitidulidae, first described by Mannerheim in 1843. It has a broad Holarctic distribution, occurring across Europe, Northern Asia (excluding China), and North America. As a member of the sap beetle family, it is associated with fermenting plant materials and fungal substrates. The species is documented in entomological collections and observation records, though detailed biological studies remain limited.
sap-beetle Nitidulidae Holarctic fermenting-substrates
Erannis
Erannis is a genus of geometer moths (Geometridae: Ennominae) erected by Jacob Hübner in 1825. The genus comprises approximately twelve species distributed primarily across the Holarctic region, with greatest diversity in northern temperate zones. Several species are significant forest pests, with larvae feeding on coniferous and deciduous trees. Taxonomic placement remains debated: some authorities recognize the tribe Erannini with Erannis as type genus, while others merge this group into Boarmiini or Bistonini.
geometridae ennominae forest-pest larch defoliator wingless-female winter-moth biocontrol baculovirus pheromone Holarctic
Erebia
alpines, ringlets, arguses
Erebia is a Holarctic genus of brush-footed butterflies in the family Nymphalidae, containing approximately 90–100 species. The genus is notable for its adaptation to cold environments, with most species inhabiting high-altitude or high-latitude regions. Members are predominantly dark brown to black with distinctive reddish-brown, orange, or rarely yellowish wing blotches or bands that typically contain black spots, sometimes with white centers. The genus exhibits complex taxonomic history with over 1300 described taxa, many of which are junior synonyms. Erebia serves as an important model for studying climate change impacts on montane and arctic-alpine insects due to its thermal ecology and distribution patterns.
butterfly Satyrinae Holarctic alpine arctic-alpine montane climate-change-indicator thermoregulation cryptic-species-complex
Erebia pawloskii
yellow-dotted alpine, Theano Alpine
Erebia pawloskii, known as the yellow-dotted alpine or Theano Alpine, is a small butterfly in the subfamily Satyrinae of family Nymphalidae. It occurs across a broad Holarctic distribution spanning northwestern North America and northern Asia. The species inhabits cold, wet environments including tundra and bog habitats. Adults fly during mid-summer, and larvae feed on sedges of the genus Carex.
butterfly alpine Holarctic tundra bog Carex
Erigone atra
Post Dwarf Weaver
Erigone atra is a small sheet-weaving spider in the family Linyphiidae, commonly known as the Post Dwarf Weaver. It is one of the most abundant species in its genus, with a holarctic distribution spanning North America, Europe, and Asia. The species is notable for its extensive use of aerial dispersal via ballooning, which enables colonization of agricultural habitats including cereal fields and grasslands. E. atra is recognized as an important biological control agent in agroecosystems, where it preys on crop pests such as aphids.
spider agricultural-pest-control aerial-dispersal ballooning sheet-web biological-control holarctic
Erigone dentigera
Teethed Dwarf Weaver
Erigone dentigera is a small dwarf spider in the family Linyphiidae, commonly known as the Teethed Dwarf Weaver. It has a Holarctic distribution spanning North America, Europe, the Caucasus, and Russia's Far East. The species was first described by O. Pickard-Cambridge in 1874. Like other members of the genus Erigone, it is a minute ground-dwelling spider.
dwarf-spider Holarctic ground-dwelling
Eriocampa
woolly sawflies
Eriocampa is a small Holarctic genus of sawflies in the family Tenthredinidae comprising approximately five to ten described extant species. The genus is characterized by larvae that produce conspicuous white waxy secretions, giving them a woolly appearance that likely serves as a defense against predators and parasitoids. Several species are economically significant as defoliators of woody plants, including Eriocampa juglandis (butternut woollyworm) on walnut and hickory, and Eriocampa ovata (woolly alder sawfly) on alder. The genus has a debated taxonomic history, with various classifications placing it in different subfamilies within Tenthredinidae.
sawfly Tenthredinidae defoliator waxy-secretion Holarctic pest introduced-species folivore walnut alder hickory urban-forestry diapause prolegs Hymenoptera
Eriocampini
Eriocampini is a tribe of sawflies within the family Tenthredinidae. Members are herbivorous, with larvae that feed externally on foliage of various plants. The tribe includes economically significant species such as the pear slug (Caliroa cerasi), whose larvae skeletonize leaves of fruit trees. Eriocampini sawflies are distributed across the Holarctic region, with greatest diversity in North America and Eurasia.
sawfly herbivore pest orchard slug-like-larvae Holarctic Tenthredinidae leaf-skeletonizer
Eriocraniidae
Sparkling Archaic Sun Moths
Eriocraniidae is a family of primitive moths restricted to the Holarctic region, comprising six extant genera. Adults are small (forewing length 4–7 mm), diurnal, and typically active in early spring, often flying in sunshine around host trees. Larvae are leaf miners on woody angiosperms, primarily in the order Fagales, with most species feeding on birch (Betula) and oak (Quercus). The family retains many ancestral morphological features and represents one of the earliest diverging lineages within Lepidoptera.
primitive-moths leaf-miners diurnal Holarctic spring-emergence metallic-coloration Fagales-hosts Eriocranioidea
Eriocranioidea
Eriocranioid moths
Eriocranioidea is a superfamily of primitive moths comprising a single family, Eriocraniidae, with six extant genera. These small, metallic moths are restricted to the Holarctic region and are among the earliest Lepidoptera to emerge in spring. Adults are primarily day-flying and possess a functional proboscis used for drinking water or sap. The larvae are leaf miners, predominantly feeding on trees in the order Fagales.
primitive-moths leaf-miners Holarctic spring-emergence metallic-moths
Eristalis anthophorina
orange-spotted drone fly
Eristalis anthophorina, the orange-spotted drone fly, is a syrphid fly with Holarctic distribution. Adults reach approximately 15 mm in length and are notable mimics of bumblebees. The species is strongly associated with wetland habitats including bogs, fens, and woodland pools. It has been observed visiting flowers of Verbena hastata, Salix myricoides, and Hesperis matronalis.
syrphidae hoverfly drone-fly mimicry wetland holarctic pollinator bumblebee-mimic aquatic-larvae-presumed
Eristalis cryptarum
Bog-dwelling Drone Fly, Bog Hoverfly
Eristalis cryptarum is a Holarctic hoverfly species specializing in bog and wetland habitats. It is notable for its restricted distribution and significant population declines across Europe, with extirpation from much of its former English range and critical endangerment in Denmark. The species exhibits classic Eristalis morphology with distinctive coloration and is a member of the drone fly group, though it is not a bee mimic to the same degree as some congeners. Its larvae are assumed to be aquatic filter-feeders in saturated peat, though they remain undescribed.
hoverfly Syrphidae bog-specialist wetland peat Holarctic declining conservation-concern undescribed-larva drone-fly
Erotinae
Erotinae is a subfamily of net-winged beetles within the family Lycidae, established by J.L. LeConte in 1881. The subfamily contains approximately 10 genera and 19 described species, including genera such as *Eros*, *Erotides*, *Eropterus*, and *Platycis*. Members of this subfamily share the characteristic reticulate wing venation typical of Lycidae but are distinguished from the larger subfamily Lycinae by specific morphological features. The group is primarily distributed in the Northern Hemisphere, with representatives in North America, Europe, and Asia.
net-winged-beetles Lycidae saproxylic Holarctic LeConte-1881
Erynnini
Duskywings and Allies
The Erynnini are a tribe of skipper butterflies in the subfamily Pyrginae, characterized by their relatively plesiomorphic morphology and generally inconspicuous appearance. The group is moderately diverse, with most species restricted to the Neotropics; notable exceptions are the Holarctic species of the type genus Erynnis (duskywings). The tribe was historically merged into a broadly defined Pyrgini but is now recognized as distinct following phylogenetic reorganization of the Pyrginae.
Lepidoptera Hesperiidae Pyrginae skipper-butterflies Neotropical Holarctic Erynnis duskywings
Erythraeus tonsus
Erythraeus tonsus is a species of predatory mite in the family Erythraeidae, first described by L. Koch in 1879. Like other erythraeid mites, it belongs to a group of active, fast-moving predators found in terrestrial habitats. The species has been recorded across Europe, Northern Asia (excluding China), and North America. Erythraeid mites are generally recognized for their elongated body form and long legs adapted for cursorial (running) locomotion.
Erythraeidae predatory-mite soil-fauna litter-fauna terrestrial cursorial two-eyed-mite Holarctic
Ethiromyia
Ethiromyia is a genus of long-legged flies in the family Dolichopodidae, established by Brooks & Wheeler in 2005. The genus was created to accommodate three species previously classified under Gymnopternus or Hercostomus. It is distributed across the Holarctic realm, with species found in Europe and eastern North America.
long-legged-flies Dolichopodidae Holarctic reclassified-genus
Euchloe
Dappled Whites, Marbles
Euchloe is a genus of pierid butterflies in the tribe Anthocharini with a Holarctic distribution spanning Europe, Central Asia, and North America. Old World species are commonly called dappled whites, while New World species are known as marbles. The genus includes approximately 30 described species, with several exhibiting narrow endemic ranges and conservation concern. Some species demonstrate remarkable camouflage abilities through background matching and wing-folding behavior.
Pieridae Anthocharini Holarctic Brassicaceae-feeder climate-change-indicator conservation-concern cryptic-coloration
Eucinetus haemorrhoidalis
Blood-tipped Eucinetus
Eucinetus haemorrhoidalis is a species of plate-thigh beetle in the family Eucinetidae. It has a Holarctic distribution, occurring across northern regions of both the Old and New Worlds. North American populations were previously recognized as a separate species, Eucinetus terminalis, but are now synonymized under this name. The species belongs to a small family of beetles characterized by their distinctive plate-like hind femora.
plate-thigh-beetle Holarctic Eucinetidae Coleoptera
Eucnecosum
Eucnecosum is a genus of rove beetles (Staphylinidae: Omaliinae) established by Reitter in 1909. The genus comprises three valid holarctic species: E. brachypterum, E. tenue, and E. brunnescens, all transferred from the genus Arpedium. These beetles occur in both Europe and North America, with E. tenue having been previously described under multiple synonyms including E. meybohmi.
rove-beetles Staphylinidae Omaliinae holarctic boreal
Eucnecosum brachypterum
Eucnecosum brachypterum is a small rove beetle (Staphylinidae: Omaliinae) with a Holarctic distribution, occurring across boreal and temperate regions of North America and Eurasia. The species was originally described in the genus Arpedium and later transferred to Eucnecosum, a generic placement confirmed by taxonomic revision. It is one of three holarctic Eucnecosum species recognized in North America. The species name refers to its short-winged (brachypterous) condition.
rove-beetle Omaliinae Holarctic boreal brachypterous taxonomic-revision
Eucnecosum brunnescens
Eucnecosum brunnescens is a rove beetle in the family Staphylinidae, subfamily Omaliinae. The species was originally described by Sahlberg in 1871 under the genus Arpedium, and later transferred to Eucnecosum. It has a Holarctic distribution, occurring across northern Europe, Russia, and North America from Alaska through Canada to the northern United States.
rove-beetle Staphylinidae Omaliinae Holarctic boreal Arpedium Sahlberg-1871 circumboreal-distribution northern-North-America northern-Europe Russia
Eucosma
Eucosma is a large genus of small tortricid moths with at least 670 described species worldwide. The genus has a Holarctic and Indomalayan distribution, with approximately 150 species in the Nearctic region and 53 in Europe. New species continue to be discovered even in well-studied regions. Species exhibit considerable variation in coloration, ranging from plain to boldly patterned.
tortricidae olethreutinae moths conifer-pests holarctic indomalayan taxonomically-complex understudied-biology
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.
parasitoid Eulophidae Entedoninae Chalcidoidea Hymenoptera minute-wasps Holarctic
Eudonia alpina
Highland Grey
Eudonia alpina is a small moth in the family Crambidae, first described by Curtis in 1850. It has a wingspan of 20–25 mm and occurs across a broad Holarctic distribution spanning Europe, Asia, and North America. Adults are active in June and July in Europe. The species is commonly known as the Highland Grey.
moth Crambidae Scopariinae Holarctic alpine grey-moth
Euhexomyza
Euhexomyza is a genus of flies in the family Agromyzidae, erected by Lonsdale in 2014 for a small, mostly Holarctic clade of species formerly classified in Hexomyza. The genus was established following a redefinition of Ophiomyia based on morphological characters, particularly the anteriorly truncated clypeus. Seven species are currently recognized, including E. schineri (Giraud, 1862) and E. salicis (Malloch, 1913).
leaf-miner-flies Holarctic taxonomic-revision-2014
Eulithis
grapevine loopers, spinach moths, chevron moths
Eulithis is a Holarctic genus of geometrid moths in the tribe Cidariini, established by Jacob Hübner in 1821. The genus contains approximately 25 described species distributed across the Northern Hemisphere. Several species are notable for their distinctive wing patterns, including chevron markings, and some have acquired common names reflecting their larval host plants or wing patterns, such as the grapevine loopers and spinach moths.
Geometridae Larentiinae Cidariini Holarctic moths genome-sequenced
Eulithis testata
Chevron, Chevron Moth
A medium-sized geometrid moth with a Holarctic distribution, found across northern Eurasia and North America. Adults are active from July to mid-September, with two generations per year in some regions and one in others. The species has experienced significant population declines in the UK since 1970.
geometrid larentiine Holarctic dusk-flying declining-UK-populations genome-sequenced
Eurois
A genus of noctuid moths established by Jacob Hübner in 1821. The genus includes approximately six recognized species distributed across the Holarctic region. Adults are characterized by distinctive morphological features including naked eyes without eyelashes, well-developed proboscis, and upturned palpi reaching the vertex of the head.
noctuidae noctuinae holarctic moths lepidoptera hübner-1821
Eurois occulta
Great Brocade, Great Gray Dart
Eurois occulta, commonly known as the Great Brocade or Great Gray Dart, is a medium-sized noctuid moth with a Holarctic distribution spanning northern Europe, Asia, and North America. Adults display distinctive gray forewings with bold black-and-white patterning and a wingspan of 50–60 mm. The species exhibits notable color polymorphism, including a nearly black mountain form (f. implicata) found in Finland, Germany, and Scotland. Larvae feed on various woody and herbaceous plants including Vaccinium, birch, and willow.
Noctuidae Holarctic moth boreal montane color-polymorphism
Eurycercus
Eurycercus is a genus of large-bodied cladoceran crustaceans (water fleas) and the sole genus of the monotypic family Eurycercidae. Species reach up to 6 mm in length, making them among the largest anomopods. The genus contains 16 described species distributed across four subgenera, with a primarily Holarctic distribution and some extensions into the Neotropics and Southern Hemisphere. Species occupy littoral zones of freshwater lakes and ponds, often associated with submerged vegetation.
cladocera water-flea freshwater littoral filter-feeder Holarctic parthenogenesis Eurycercidae large-bodied predation-vulnerable
Eurycercus longirostris
Eurycercus longirostris is a Holarctic cladoceran crustacean first described by Hann in 1982. A 2011 taxonomic revision synonymized E. vernalis with E. longirostris due to lack of morphological and genetic justification for their separation. The species has a broader distributional range than previously recognized and belongs to the subgenus Eurycercus (Eurycercus). As a member of the Eurycercidae family, it shares characteristics with other chydorid-like cladocerans including a rounded carapace and specialized feeding appendages.
cladocera crustacea freshwater zooplankton Holarctic Nearctic Eurycercidae taxonomy synonymy Eurycercus Branchiopoda Anomopoda Ctenopoda
Eurypogon
Eurypogon is a genus of soft-bodied plant beetles in the family Artematopodidae. The genus contains approximately 11 described species distributed across the Holarctic region, with species described from North America, Japan, and China. Two Chinese species, E. jaechi and E. heishuiensis, were described in 2013 from mountainous regions of Yunnan Province. The genus is characterized by soft, flexible bodies and is placed phylogenetically within the superfamily Elateroidea in a basal position near Omethidae and Telegeusidae.
Artematopodidae Elateroidea soft-bodied-plant-beetles Holarctic Japan China North-America
Eustrophinae
Eustrophinae is a subfamily of beetles within the family Tetratomidae, established by Gistel in 1848. These beetles are part of the superfamily Tenebrionoidea and are characterized by their association with fungal habitats. The subfamily includes genera such as Eustrophus and Pseudoholostrophus. Members are small to medium-sized beetles with relatively uniform morphology across the group.
fungivorous saproxylic polypore-associated forest-specialist Holarctic
Euura
Euura is a genus of sawflies in the family Tenthredinidae, subfamily Nematinae, with exceptional species diversity concentrated in northern Holarctic regions rather than tropical zones. The genus contains both free-feeding larvae that consume plant foliage externally and gall-inducing species whose larvae develop entirely within plant galls. Gall-forming females inject a stimulant during oviposition that initiates gall growth before eggs hatch, a distinctive mechanism among gall insects. Taxonomic revision in 2014 consolidated several former genera (Eupontania, Phyllocolpa, Pontania, Tubpontania) into Euura based on phylogenetic evidence. The genus exhibits substantial genetic complexity, with frequent mito-nuclear discordance and multiple functional COI variants within individuals complicating species identification.
sawfly gall-inducing willow-associated boreal Holarctic Nematinae phylogenetic-revision cryptic-species mito-nuclear-discordance host-specificity resource-regulation spring-phenology Francesco-Redi Leeuwenhoek taxonomic-controversy COI-barcoding-limitations
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.
sawfly Tenthredinidae Nematinae Euura Hymenoptera Birch Betula Holarctic Norway Zaddach-1876 Marbled-Birch-Nematine Nematus-poecilonotus
Euxoa adumbrata
Sordid Dart
Euxoa adumbrata, commonly known as the sordid dart, is a noctuid moth species first described by Eduard Friedrich Eversmann in 1842. It occurs across northern boreal regions of North America and Eurasia, including northern Canada, Alaska, Greenland, Scandinavia, and the Ural Mountains. The species has one generation per year, with adults active during summer months. Larvae feed on Taraxacum and Polygonum species.
boreal cutworm univoltine Holarctic noctuid
Euxoa ochrogaster
red-backed cutworm, red-backed cutworm moth
Euxoa ochrogaster, the red-backed cutworm, is a Noctuidae moth with a Holarctic distribution spanning Iceland, northern Europe, and North America from Alaska to Newfoundland and south to Arizona and New Mexico. Adults are active from late July to early September, with flight phenology tied to accumulated degree-days above 12.5°C. The larvae are generalist feeders on broad-leaved plants and grasses, including Plantago species, and are economically significant as pests of sunflower (Helianthus annuus) in North America. Laboratory studies indicate eggs possess a moderately severe diapause terminated more quickly at 5°C, with development rates varying inversely with temperature.
cutworm agricultural-pest sunflower-pest Holarctic nocturnal degree-day-phenology diapause sex-attractant-monitoring
Evarcha proszynskii
Proszynski's Jumping Spider
Evarcha proszynskii is a Holarctic jumping spider species first described from Russia in 1998. It occurs across northern Eurasia from Russia through Japan, and has established populations in western North America. The species is primarily diurnal but has been observed sheltering on building exteriors at night. Like other salticids, it hunts by sight without using webs.
jumping-spider Salticidae Holarctic diurnal building-dwelling synanthropic