Western-north-america
Guides
Eupithecia lachrymosa
Lachrymose Pug Moth
Eupithecia lachrymosa is a small geometrid moth in the pug moth group, described by George Duryea Hulst in 1900. It occurs across western North America from central Saskatchewan to southern California. The species has been documented visiting apple flowers at night, contributing to nocturnal pollination services in agricultural settings.
Eupithecia lafontaineata
Eupithecia lafontaineata is a small moth in the family Geometridae, described by Bolte in 1990. It belongs to the large genus Eupithecia, commonly known as pug moths. The species is found in western North America, with adults active during summer months. Like other members of its genus, it exhibits the narrow-winged morphology and distinctive resting posture characteristic of pug moths.
Eupithecia longipalpata
Long-palp Pug
Eupithecia longipalpata is a species of pug moth in the family Geometridae, first described by Packard in 1876. It is distinguished from other members of the palpata group by its larger wingspan of 23–26 mm. The species occurs in western North America from coastal British Columbia south to northern California. Larvae feed exclusively on conifer needles, with documented hosts spanning multiple genera including Abies, Pseudotsuga, Tsuga, Thuja, Picea, and Pinus.
Eupithecia macdunnoughi
Pug moth
Eupithecia macdunnoughi is a small moth in the family Geometridae, first described by Rindge in 1952. It belongs to the genus Eupithecia, commonly known as "pug" moths due to their distinctive appearance and resting posture. The species has been documented visiting apple flowers, contributing to nocturnal pollination services.
Eupithecia maestosa
pug moth
Eupithecia maestosa is a small geometrid moth described by George Duryea Hulst in 1896. It belongs to the diverse 'pug' genus Eupithecia, characterized by narrow wings and distinctive resting posture. The species occurs across western North America from Alberta to California and Texas, and has been documented visiting apple flowers as a nocturnal pollinator.
Eupithecia misturata
Tamarack Looper
Eupithecia misturata is a small geometrid moth in the genus Eupithecia, commonly known as pugs. First described by George Duryea Hulst in 1896, it is widely distributed across western North America. The species has been documented visiting apple flowers and other flowering plants, contributing to nocturnal pollination services. Two subspecies are recognized: E. m. misturata and E. m. delzurata.
Eupithecia multistrigata
Eupithecia multistrigata is a small moth in the family Geometridae, first described by George Duryea Hulst in 1896. It is widespread across western North America, ranging from the Canadian provinces of Alberta and Saskatchewan south through the western United States to Arizona and New Mexico. The species has a wingspan of approximately 20 mm. Like other members of the genus Eupithecia, commonly known as "pugs," it exhibits the characteristic narrow wings and distinctive resting posture typical of this diverse group of inchworm moths.
Eupithecia nevadata
Nevada Pug
Eupithecia nevadata is a small pug moth in the family Geometridae, first described by Alpheus Spring Packard in 1871. It occurs in western North America, with recognized subspecies in Nevada, California, Utah, Colorado, and southern California. The species has been documented visiting apple flowers at night, contributing to nocturnal pollination services.
Eupithecia niphadophilata
A small geometrid moth in the genus Eupithecia, commonly known as a "pug." First described in 1904, this species ranges across western North America from British Columbia to New Mexico. Adults fly in late summer, while larvae feed on coniferous trees including juniper and western redcedar. The species overwinters as an egg.
Eupithecia niveifascia
Eupithecia niveifascia is a small geometrid moth first described by George Duryea Hulst in 1898. It occurs in western North America from southwestern Alberta to Vancouver Island, and south to New Mexico. Adults are active from late May to mid-July and have been documented visiting apple flowers, contributing to nocturnal pollination services.
Eupithecia perfusca
Pug moth
Eupithecia perfusca is a small moth in the family Geometridae, first described by George Duryea Hulst in 1898. It is found in western North America. The species has a wingspan of approximately 21 mm. Larvae feed on Salix (willow), Alnus (alder), and Betula (birch) species. Adults have been observed visiting apple flowers, suggesting a role in nocturnal pollination.
Eupithecia placidata
Eupithecia placidata is a small geometrid moth in the pug group, first described by Taylor in 1908. It occurs in western North America from British Columbia to California. The species has a wingspan of approximately 20 mm and is active as an adult from February through October. Its larvae feed on a diverse range of coniferous and deciduous trees including junipers, cedars, poplars, pines, Douglas-fir, firs, hemlocks, and birches.
Eupithecia rotundopuncta
Eupithecia rotundopuncta is a small moth in the family Geometridae, first described by Alpheus Spring Packard in 1871. It is native to western North America, ranging from Arizona to the Pacific coast and north to Vancouver Island. The species has been documented as a nocturnal pollinator of apple flowers, contributing to nighttime pollination services in agricultural settings. As a member of the genus Eupithecia, it shares the characteristic narrow-winged morphology and resting posture typical of 'pug' moths.
Eupithecia scabrogata
Pug moth
Eupithecia scabrogata is a small geometrid moth described by Pearsall in 1912. It occurs in western North America from British Columbia south to California and Arizona. Adults are active primarily from November through March, with a possible second generation in May. The species has been documented visiting apple flowers at night, contributing to nocturnal pollination services.
Eupithecia segregata
Pug moth
Eupithecia segregata is a small moth in the family Geometridae described by Pearsall in 1910. It is one of many 'pug' moths in the genus Eupithecia, recognized by their narrow wings and distinctive resting posture. The species shows considerable phenotypic variation and exhibits altitudinal variation in flight period timing.
Eupithecia spermaphaga
fir cone looper
Eupithecia spermaphaga is a small geometrid moth native to western North America. The species is notable for its specialized larval biology: caterpillars bore into and feed within the cones of fir and Douglas-fir trees. Adults are active across multiple months from spring through fall, with records spanning March through October. The species has been documented visiting apple flowers at night, contributing to nocturnal pollination services.
Eupithecia stellata
stellate pug
Eupithecia stellata is a small moth in the family Geometridae, first described by George Duryea Hulst in 1896. It belongs to the large genus Eupithecia, commonly known as "pug" moths. The species occurs across western North America from central Canada to Mexico. Adults have been documented visiting apple flowers at night, contributing to nocturnal pollination services in agricultural settings.
Eupithecia subapicata
Pug moth
Eupithecia subapicata is a small geometrid moth in the family Geometridae, first described by Achille Guenée in 1857. It is native to the western United States, ranging from California through Oregon to Washington. The species is characterized by narrow wings and a distinctive resting posture typical of pug moths. Adults have been recorded on wing from January through July, with a wingspan of approximately 22–26 mm.
Eupithecia subcolorata
Eupithecia subcolorata is a small moth in the family Geometridae, first described by George Duryea Hulst in 1898. It belongs to the large genus Eupithecia, commonly known as 'pug' moths, characterized by narrow wings and distinctive resting postures. The species occurs in western North America and has been documented as a nocturnal visitor to flowers, including apple blossoms.
Eupithecia tenuata
Pug moth
Eupithecia tenuata is a small pug moth in the family Geometridae, first described from western North America in 1880. The species occurs from southern British Columbia through the Rocky Mountains to Arizona and New Mexico. Adults are active in mid-summer and have been documented visiting apple flowers at night, contributing to nocturnal pollination of fruit crops.
Eupithecia unicolor
Pug Moth
Eupithecia unicolor is a small geometrid moth native to western North America. Adults are active from spring through late autumn, with a wingspan of approximately 21 mm. The species is notable for its narrow wings and characteristic resting posture typical of pug moths. Larvae feed on coniferous trees including juniper, western redcedar, and Alaska cedar.
Eupithecia zelmira
Eupithecia zelmira is a small geometrid moth described by Swett and Cassino in 1920. It occurs in the western United States, specifically Oregon and California. Adults are active across an unusually broad period, with records from February through July and again in December. The species has been documented visiting apple flowers, contributing to nocturnal pollination services.
Eupnigodes
Eupnigodes is a genus of slant-faced grasshoppers in the family Acrididae. The genus contains at least two described species, both restricted to the western United States. As members of the subfamily Gomphocerinae and tribe Aulocarini, these grasshoppers share morphological features with related genera in this group. The genus was established by McNeill in 1897.
Eupnigodes megacephala
Big-headed grasshopper
Eupnigodes megacephala is a medium-sized grasshopper widely distributed across western North America. Formerly classified as Aulocara elliotti, this species is notable for its disproportionately large, rounded head and bright blue hind tibiae. It inhabits shortgrass prairies, desert grasslands, and occasionally montane areas up to 8,500 feet elevation. The species is economically significant as a rangeland pest, capable of reaching outbreak densities that severely reduce forage for livestock and promote soil erosion.
Eupnigodes sierranus
Sierran White-whiskered Grasshopper
Eupnigodes sierranus, commonly known as the Sierran White-whiskered Grasshopper, is a species of slant-faced grasshopper in the family Acrididae. It is native to the western United States, with confirmed records from California. The species was first described by Rehn and Hebard in 1909. It belongs to the subfamily Gomphocerinae, a group characterized by their slanted facial profiles.
Eupompha elegans elegans
Eupompha elegans elegans is a subspecies of blister beetle in the family Meloidae, tribe Eupomphini. It is one of two recognized subspecies within E. elegans, the other being E. e. perpulchra. The species is native to western North America. Adult beetles are known to feed on plant foliage and flowers. Like other meloids, larvae are likely hypermetamorphic, developing through distinct mobile and sedentary phases.
Eurhinosea
Eurhinosea is a monotypic moth genus in the family Geometridae, established by Packard in 1873. It contains a single species, Eurhinosea flavaria, which occurs in western North America. The genus belongs to the subfamily Larentiinae, a diverse group of geometrid moths often associated with cooler or montane habitats.
Eurhinosea flavaria
A small geometrid moth found in western North America. The genus Eurhinosea is monotypic, containing only this species. Both the genus and species were described by Packard in 1873. The species name flavaria suggests yellow coloration.
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.
Eusattus
sand darkling beetle
Eusattus is a genus of darkling beetles in the family Tenebrionidae, established by J.L. LeConte in 1851. Species within this genus are associated with sandy habitats in western North America. The genus is represented by at least one well-documented species, Eusattus reticulatus, which has been observed in juniper-oak-pinyon woodland on sandstone escarpments.
Eusattus muricatus
Eusattus muricatus is a darkling beetle in the family Tenebrionidae. The genus Eusattus comprises sand-dwelling species found in arid and semi-arid regions of western North America. Eusattus muricatus is one of several species in this genus adapted to sandy habitats, where it occurs as part of the ground-dwelling beetle fauna.
Eusattus politus
Eusattus politus is a species of darkling beetle in the family Tenebrionidae. The genus Eusattus comprises sand-dwelling darkling beetles found in arid and semi-arid regions of western North America. Members of this genus are typically associated with sandy substrates and are active during the warmer months. Based on related species in the genus, E. politus likely inhabits sandy grasslands and dune systems.
Eutettix querci
Eutettix querci is a leafhopper species in the family Cicadellidae, described by Gillette and Baker in 1895. The specific epithet 'querci' suggests an association with oak (Quercus), though detailed biological information remains limited. A variety, Eutettix querci var. albus, was described by Hepner in 1942 but is now considered a synonym. Distribution records indicate occurrence in western and south-central United States.
Eutreta diana
Eutreta diana is a gall-forming tephritid fly native to western North America. Females oviposit in vegetative buds of sagebrush (Artemisia spp.), and larvae induce woody galls where they feed internally. The species has one generation per year, with gall growth synchronized to spring seasonal growth of host plants. Adults display distinctive coloration: pale green eyes, white-dotted black wings, and bright red abdomens.
Euvacusus coloradanus
Euvacusus coloradanus is a species of ant-like flower beetle in the family Anthicidae, described by Casey in 1904. The species is known from western and central Canada, with records from Alberta, British Columbia, and Manitoba. Members of the genus Euvacusus are small beetles characterized by their compact, ant-like appearance and association with ground-level habitats. Specific biological details for this species remain poorly documented.
Euxoa aequalis
Euxoa aequalis is a noctuid moth species described by Leon F. Harvey in 1876. It occurs in western North America from the Canadian provinces of British Columbia, Alberta, Saskatchewan, and Yukon southward into the United States, with records from Colorado, Wyoming, and California. The species has a wingspan of approximately 33 mm. Like other members of the genus Euxoa, the larvae are likely cutworms, though specific life history details for this species remain poorly documented.
Euxoa atomaris
Euxoa atomaris is a noctuid moth species first described by Smith in 1890. Adults are active from July to September and have a wingspan of 30–34 mm. The species is distributed across western North America from the northern Great Plains to the southwestern United States. Three subspecies are recognized: E. a. atomaris, E. a. detesta, and E. a. esta.
Euxoa atristrigata
Euxoa atristrigata is a noctuid moth species described by Smith in 1890. It occurs in western North America from British Columbia and Saskatchewan southward to California. As a member of the genus Euxoa, its larvae likely share the cutworm habit of feeding at or below the soil surface on plant stems, though species-specific biology remains poorly documented.
Euxoa auripennis
Euxoa auripennis is a noctuid moth described by J. Donald Lafontaine in 1974. It occurs in western North America from the Great Plains to the Pacific coast. Adults fly in late summer with a single annual generation. The species is one of many Euxoa cutworms whose larvae feed on herbaceous vegetation.
Euxoa basalis
Euxoa basalis is a noctuid moth species distributed across western North America, from the Canadian prairie provinces south through the Rocky Mountain region to the southwestern United States. The species is considered abundant in the Rocky Mountain region. Adults have a wingspan of approximately 35 mm. The immature stages have been described in biosystematic studies of the genus Euxoa.
Euxoa bicollaris
Euxoa bicollaris is a noctuid moth in the genus Euxoa, characterized by a wingspan of approximately 32 mm. The species is endemic to western North America, with its core distribution in California and range extending northward to southern British Columbia. As a member of the cutworm moth group, its larvae likely exhibit typical cutworm feeding habits, though species-specific biological details remain poorly documented.
Euxoa biformata
Euxoa biformata is a noctuid moth described by Smith in 1910. The species occurs in western North America from British Columbia south to California. Available information is limited; specific details about its biology, larval hosts, and ecology remain undocumented in the accessible literature.
Euxoa bochus
Euxoa bochus is a noctuid moth native to western North America, described by Herbert Knowles Morrison in 1874. Adults have a wingspan of 34–36 mm and are active from mid-July to mid-October, with a single generation per year. The species occurs across a broad elevational and latitudinal range from Vancouver Island to northern New Mexico.
Euxoa brevipennis
Euxoa brevipennis is a noctuid moth described by Smith in 1888. The species has a wingspan of approximately 33 mm. It occurs in western North America, with records from the Canadian provinces of British Columbia, Alberta, and Saskatchewan, and the U.S. states of Utah, Colorado, and California. The specific epithet 'brevipennis' refers to short wings, though detailed morphological descriptions beyond wingspan are not readily available in the literature.
Euxoa brunneigera
Euxoa brunneigera is a noctuid moth species occurring in western North America from British Columbia south to California. Adults have a wingspan of approximately 30 mm and exhibit variable coloration ranging from grey to brown. The species belongs to the genus Euxoa, which includes numerous cutworm species whose larvae are agricultural pests.
Euxoa castanea
Euxoa castanea is a moth species in the family Noctuidae described by J. Donald Lafontaine in 1981. It is found in western North America, with a wingspan of 35–38 mm. Adults are active from July to August, with one generation per year. The species belongs to a large genus of cutworm moths, many of which are agricultural pests.
Euxoa choris
Euxoa choris is a noctuid moth described by Leon F. Harvey in 1876. It occurs across western North America from the Yukon and Canadian prairies south to the southwestern United States. Adults are active during summer months with a single annual generation. The species is one of many Euxoa moths attracted to ultraviolet light sources.
Euxoa cicatricosa
Scarred Dart
Euxoa cicatricosa is a noctuid moth species first described in 1865. Adults have a wingspan of 29–32 mm and are active from August to September. The species has one generation per year and occurs across western North America from southern Canada to the southwestern United States.
Euxoa citricolor
Euxoa citricolor is a noctuid moth species described by Augustus Radcliffe Grote in 1880. The species is found in western North America, with a wingspan of 34–37 mm. Adults are active from August to September, with one generation per year. Larvae are likely cutworms, though specific host plant associations for this species are not well documented.
Euxoa dargo
Euxoa dargo is a noctuid moth species described by Ferdinand Heinrich Hermann Strecker in 1898. It occurs in western North America from south-eastern Manitoba to the southern interior of British Columbia, south to Oregon, southern Idaho, and northern New Mexico, and east to eastern South Dakota. Adults are active from August to September with one generation per year. The species is known to be associated with agricultural settings, with larvae recorded feeding on corn and Salsola species.