Lepidoptera

  • Monarch Butterflies and their extraordinary migration
    At first glance, the monarch butterfly seems built for beauty, not endurance. Its paper-thin wings look like they could tear in a strong breeze, and its delicate body appears better suited for floating between flowers than crossing continents. Yet these seemingly fragile creatures pull off one of nature's most incredible feats: a 3,000-mile migration. Just like geese, caribou, and senior citizens, they undertake this migration to avoid the harsh winters of the north.
  • Atlas Moths
    Explore the captivating world of Atlas moths, the majestic giants of the moth kingdom, renowned for their immense wingspan and striking appearance. Delve into their fascinating physical characteristics, behaviors, life cycle, habitat preferences, and conservation status.

Guides

  • Euxoa plagigera

    cutworm, dart moth

    Euxoa plagigera is a species of cutworm moth in the family Noctuidae. It is found in North America, with confirmed records from Alberta and Saskatchewan in Canada. As a member of the Euxoa genus, it shares characteristics with other cutworm moths, though specific details about its biology and ecology remain limited in available sources.

  • Euxoa pluralis

    Euxoa pluralis is a moth species in the family Noctuidae. It occurs in western North America from British Columbia southward through Nevada to California. The wingspan is approximately 34 mm. Information on its biology and ecology is limited compared to better-known congeners such as Euxoa auxiliaris.

  • Euxoa punctigera

    Euxoa punctigera is a species of owlet moth in the family Noctuidae. It belongs to a large genus of cutworm moths whose larvae are significant agricultural pests. The species was described by Walker in 1865 and is found in North America. Like other Euxoa species, the larvae likely exhibit typical cutworm behavior, feeding on plant stems at or below the soil surface.

  • Euxoa quadridentata

    Euxoa quadridentata is a species of cutworm moth in the family Noctuidae, distributed across North America. As a member of the genus Euxoa, its larvae likely exhibit typical cutworm behavior, feeding on plant stems at or below the soil surface. The species was described by Grote and Robinson in 1865. Specific details about its biology and ecology remain limited in available sources.

  • Euxoa satiens

    Euxoa satiens is a species of noctuid moth described by Smith in 1890. It occurs along the Pacific coast of North America from British Columbia south to California. The wingspan is approximately 34 mm. Like other members of the genus Euxoa, the larvae are likely cutworms that feed on vegetation, though specific life history details for this species remain poorly documented.

  • Euxoa scholastica

    scholastic dart

    Euxoa scholastica, known as the scholastic dart, is a noctuid moth species native to eastern North America. The species has a wingspan of approximately 28 mm. Adults are active from July to August. The common name 'scholastic dart' is a standardized vernacular name for this species in North American lepidopteran literature.

  • Euxoa scotogrammoides

    Euxoa scotogrammoides is a species of owlet moth in the family Noctuidae, described by James Halliday McDunnough in 1932. As a member of the genus Euxoa, it shares characteristics with other cutworm moths, though specific biological details for this species remain poorly documented. The species is known from North America.

  • Euxoa sculptilis

    sculptured cutworm, sculptilis dart moth

    Euxoa sculptilis is a species of cutworm or dart moth in the family Noctuidae, first described by Harvey in 1875. The species is found in North America, though specific details about its biology, host plants, and ecological role remain poorly documented compared to related species such as the army cutworm (Euxoa auxiliaris). The MONA or Hodges number for this species is 10815.

  • Euxoa septentrionalis

    Northern Cutworm

    Euxoa septentrionalis is a cutworm moth in the family Noctuidae. It occurs in North America, with records from Alberta and Manitoba in Canada. Like other Euxoa species, it likely overwinters as a larva. The species is part of a large genus of cutworm moths, many of which are agricultural pests.

  • Euxoa serricornis

    cutworm, dart moth

    Euxoa serricornis is a species of cutworm moth in the family Noctuidae, found in North America. It belongs to a genus whose larvae are known as cutworms—generalist feeders that sever plant stems at or near the soil surface. The species is one of many Euxoa spp. that can be agricultural pests, though specific documentation of E. serricornis damage is sparse. Adults are nocturnal and attracted to light.

  • Euxoa siccata

    Euxoa siccata is a species of owlet moth in the family Noctuidae, first described by Smith in 1893. It is found in North America, with documented occurrences in Alberta, Canada and Colorado, United States. The species has a wingspan of approximately 30 mm. As a member of the genus Euxoa, its larvae are likely cutworms, though specific life history details for this species remain poorly documented.

  • Euxoa simulata

    Euxoa simulata is a noctuid moth described by James Halliday McDunnough in 1946. It belongs to the genus Euxoa, a large group of cutworm moths primarily distributed in North America. The species is documented from western North America, ranging from British Columbia southward to California.

  • Euxoa sinelinea

    Gray-edged Dart

    Euxoa sinelinea is a noctuid moth species described by Hardwick in 1965. As a member of the dart moth genus Euxoa, it shares the general characteristics of this large and diverse group of owlet moths. The species is documented from parts of western Canada, specifically Alberta and Manitoba. Like other Euxoa species, the larvae are likely cutworms—soil-dwelling caterpillars that feed at or below ground level on host plants.

  • Euxoa stigmatalis

    Euxoa stigmatalis is a species of owlet moth in the family Noctuidae, described by Smith in 1900. It is a member of the large genus Euxoa, which contains numerous cutworm species. The species is native to North America. As a noctuid moth, it likely shares the typical life history of many Euxoa species, with larvae that are cutworms feeding on vegetation and adults that are nocturnal. However, specific biological details for this species are poorly documented in available sources.

  • Euxoa teleboa

    cutworm moth, dart moth

    Euxoa teleboa is a species of cutworm or dart moth in the family Noctuidae, first described by Smith in 1890. It is found in North America, with confirmed records from Alberta and Saskatchewan in Canada. As a member of the genus Euxoa, it shares the general biology of cutworm moths, with larvae that are nocturnal feeders on plants. The species is poorly documented compared to related cutworms like the army cutworm (Euxoa auxiliaris).

  • Euxoa trifasciata

    Euxoa trifasciata is a noctuid moth species found in western North America. It belongs to the large genus Euxoa, which contains numerous cutworm species. The species was described by Smith in 1888. Available records indicate its presence in Oregon, Washington, Colorado, and California, though detailed biological information remains limited.

  • Euxoa ustulata

    Euxoa ustulata is a species of owlet moth in the family Noctuidae, first described by J. Donald Lafontaine in 1976. It belongs to the large genus Euxoa, which includes numerous cutworm and dart moth species distributed across North America. The species is part of the diverse Noctuinae subfamily, whose larvae are commonly known as cutworms or armyworms. Information specific to E. ustulata remains limited in the provided sources, though the genus is well-documented for its agricultural significance and ecological roles.

  • Euxoa westermanni

    Euxoa westermanni is a species of cutworm moth in the family Noctuidae, first described by Staudinger in 1857. The species is distributed across North America and is assigned Hodges number 10707. Two subspecies are recognized: Euxoa westermanni westermanni and Euxoa westermanni polaris (Bang-Haas, 1910). As a member of the dart moth genus Euxoa, adults are likely nocturnal and larvae probably exhibit typical cutworm feeding behavior on herbaceous plants, though specific life history details for this species remain poorly documented.

  • Evergestis aridalis

    Evergestis aridalis is a small crambid moth described by Barnes and McDunnough in 1914. It is restricted to arid regions of the southwestern United States, specifically California and Nevada. Adults are active in spring and late summer, with a wingspan of approximately 27 mm.

  • Evora

    Evora is a genus of tortricid moths described by Heinrich in 1926. It belongs to the subfamily Olethreutinae, a group of small to medium-sized moths commonly known as tortrix moths or leafroller moths. The genus contains multiple species, though specific details about individual species remain limited in published literature.

  • Exorista

    uzi fly

    Exorista is a genus of tachinid flies comprising approximately 70 described species distributed across multiple subgenera. The genus includes both beneficial biocontrol agents and economically significant pests of sericulture. Species such as E. sorbillans (uzi fly) are major constraints on silk production, causing up to 80% crop loss in outdoor silkworm operations through endoparasitic larval development. Other species have been evaluated for biological control of agricultural pests, including E. larvarum for in vitro rearing and E. deligata for control of tea loopers. The genus exhibits diverse host associations, primarily targeting Lepidoptera.

  • Exoristinae

    Exoristinae is a subfamily of tachinid flies (Diptera: Tachinidae) comprising approximately 1,000 described species across 11 tribes. Most species are parasitoids of Lepidoptera caterpillars, though some tribes exhibit host specificity for other insect orders including Orthoptera and Heteroptera. The subfamily is distributed worldwide with greatest diversity in the Neotropics. Several species have been employed in biological control programs against agricultural pests.

  • Fala

    Fala is a genus of moths in the family Noctuidae, subfamily Stiriinae, established by Grote in 1875. The genus belongs to the tribe Stiriini and is part of the diverse noctuid moth fauna. Members of this genus are classified within the superfamily Noctuoidea, one of the largest groups of Lepidoptera. Very few observations of Fala species have been documented, with only 8 records reported to iNaturalist, suggesting either rarity, cryptic habits, or limited survey effort.

  • Fania nanus

    Fania nanus is a small moth in the family Cossidae, described by Strecker in 1876. It is known from a limited distribution in the southern United States, with records from Arizona, Louisiana, Mississippi, and Texas. Adults are active from May to August and have a wingspan of approximately 28 mm.

  • Fascista bimaculella

    Fascista bimaculella is a small moth in the family Gelechiidae, found in eastern North America. The species is distinguished by its striking forewing pattern: a dark purplish-brown to black background with two prominent white markings—a large discal spot and a costal streak. It occurs in the United States east of the Rocky Mountains. The specific epithet 'bimaculella' refers to these two macules (spots).

  • Feltia

    Feltia is a genus of owlet moths in the family Noctuidae, established by Francis Walker in 1856. The genus comprises approximately 18 described species distributed primarily across North America, with some species extending into northern Eurasia. Several Feltia species are notable agricultural pests, with larvae commonly known as cutworms or armyworms that feed on a variety of crops. The genus has undergone significant taxonomic revision, with many species transferred from related genera such as Agrotis and Trichosilia based on morphological and molecular evidence.

  • Feltia mollis

    Soft Dart

    Feltia mollis is a species of cutworm moth in the family Noctuidae, commonly known as the Soft Dart. It is distributed across North America, with confirmed records in the Canadian provinces of Alberta, Manitoba, and Saskatchewan. The species was originally described by Francis Walker in 1857 as Agrotis mollis and later transferred to the genus Feltia. As a member of the cutworm group, larvae likely exhibit subterranean feeding habits typical of this ecological guild, though specific details remain poorly documented.

  • Feltia tricosa

    tricose dart

    Feltia tricosa, commonly known as the tricose dart, is a noctuid moth found in central North America. The species has a wingspan of approximately 35 mm. Adults are active from July through September in northern portions of its range. The larvae are subterranean cutworms that have been observed feeding on a variety of plants. This species is notable as a host for the ichneumon wasp Ceratogastra ornata, which parasitizes its eggs and early larval stages.

  • Feralia comstocki

    Comstock's Sallow

    Feralia comstocki, commonly known as Comstock's Sallow, is a noctuid moth found across northern and western North America. The species was first described by Augustus Radcliffe Grote in 1874. Adults fly in spring, with larvae feeding on pine species. One subspecies, F. c. columbiana, is recognized.

  • Feralia major

    Major Sallow

    Feralia major is a noctuid moth with a wingspan of approximately 40 mm. It occurs across the northeastern United States and southern boreal forest of Canada, extending west to Alberta. Adults are active in April, with timing varying by location. The species was first described by John Bernhardt Smith in 1890.

  • Fota

    Fota is a genus of moths in the family Noctuidae, subfamily Stiriinae. It was established by Augustus Radcliffe Grote in 1882. The genus belongs to the tribe Stiriini, a group of owlet moths characterized by distinctive morphological features. As of current records, the genus has been documented with limited observational data.

  • Fota armata

    Fota armata is a species of owlet moth in the family Noctuidae, described by Grote in 1882. It is found in North America. The species is assigned to the subfamily Stiriinae and tribe Stiriini. The MONA or Hodges number for this species is 9842.

  • Furcula borealis

    White Furcula Moth

    Furcula borealis, commonly known as the white furcula moth, is a North American notodontid moth with a wingspan of 31–42 mm. Adults are active from April to August across a broad range extending from New Hampshire to Florida and westward to Texas, Colorado, and South Dakota. The larvae feed on woody plants including cherry, willow, and poplar species.

  • Furcula gigans

    Furcula gigans is a moth species in the family Notodontidae, first described by McDunnough in 1922. The species has been recorded across central and western Canada and the northeastern United States. Taxonomic status varies by source: Catalogue of Life treats it as accepted, while GBIF lists it as a synonym of Furcula occidentalis. Like other members of the genus Furcula, it belongs to the prominent moth group characterized by distinctive larval morphology including a forked tail-like structure.

  • Furcula modesta

    Modest Furcula Moth, Modest Furcula, Modest Kitten

    Furcula modesta is a species of prominent moth in the family Notodontidae, first described by Hudson in 1891. The species is known by the common names modest furcula or modest kitten. It is distributed across North America, with confirmed records from Canada (Alberta, Manitoba, Saskatchewan) and the United States (Vermont). As a member of the genus Furcula, it belongs to a group of moths whose caterpillars are commonly known as 'kittens' due to their distinctive forked defensive posture.

  • Furcula occidentalis

    Western Furcula Moth, Double-lined Furcula, Willow Kitten

    Furcula occidentalis is a notodontid moth known by several common names including western furcula moth, double-lined furcula, and willow kitten. The species exhibits a broad transcontinental distribution across North America, from the Yukon to the Atlantic coast. Adults are active from spring through summer with one to two generations annually. The larvae feed primarily on willow (Salix) species and occasionally on poplar (Populus), giving rise to the 'willow kitten' common name.

  • Furcula wileyi

    Furcula wileyi is a moth species in the family Notodontidae, first described by Dyar in 1922. The genus Furcula belongs to the subfamily Cerurinae, a group of prominent moths known for their distinctive larval morphology. As a member of the Noctuoidea superfamily, this species exhibits the typical characteristics of owlet moths. Very few observations of this species have been recorded, with only 16 documented observations on iNaturalist, suggesting it is either rare, cryptic, or restricted in distribution.

  • Gabara

    Gabara is a genus of moths in the family Erebidae, subfamily Calpinae, established by Francis Walker in 1866. The genus is distributed in North America, with documented records from the United States including Vermont. As a noctuoid moth genus, Gabara species are part of the diverse assemblage of erebid moths that exhibit varied ecological habits. The genus is recognized in major taxonomic databases including Catalogue of Life, GBIF, and NCBI Taxonomy.

  • Galacticoidea

    Galacticoid Moths

    Galacticoidea is a monotypic superfamily of Lepidoptera containing the single family Galacticidae. These moths were historically classified within several different superfamilies before molecular and morphological studies established their distinct placement at the base of Apoditrysia, a major clade of Lepidoptera. The superfamily remains poorly studied, with limited ecological and biological data available.

  • Galgula

    The Wedgling

    Galgula is a genus of noctuid moths comprising at least three described species. The most well-documented species, Galgula partita, has been observed visiting apple flowers and contributing to nocturnal pollination of agricultural crops. These moths are small, nocturnal insects attracted to ultraviolet light sources. The genus belongs to the subfamily Noctuinae within the large family Noctuidae.

  • Gastropachini

    Gastropachini is a tribe of lappet moths within the family Lasiocampidae, subfamily Lasiocampinae. The tribe includes the genus Sonitha, which contains species restricted to the Congolian lowland forests of Central Africa. Recent taxonomic work has described new species in this genus and clarified distribution records.

  • Gelechia

    Gelechia is a genus of small moths in the family Gelechiidae, first described by Hübner in 1825. The type species is Gelechia rhombella. Species in this genus are associated with various host plants including cotton (Gossypium), juniper (Juniperus), and Palo Verde trees (Parkinsonia). Some species have been moved to other genera based on morphological revisions, such as Gelechia acanthopis which was transferred to the new genus Sitotrogoides. The genus has been recorded from Europe, Asia, and North America.

  • Gelechia albisparsella

    Gelechia albisparsella is a small gelechiid moth native to eastern and central North America. Adults are characterized by dark brown forewings with faint ochreous suffusion and sparse white scaling concentrated near the costal cilia. The larvae are specialized leaf skeletonizers of American sycamore (Platanus occidentalis). Despite being described in 1872, the species remains poorly documented beyond its original description and scattered collection records.

  • Gelechia lynceella

    Gelechia lynceella is a small moth in the family Gelechiidae, first described by Zeller in 1873. It is widely distributed across North America, with records spanning from western Canada through the United States to southern regions. The species belongs to a large genus of gelechiid moths, many of which are poorly known biologically. Like other members of Gelechiidae, adults are typically small with narrow wings.

  • Gelechia ribesella

    Gelechia ribesella is a small moth in the family Gelechiidae (twirler moths), described by V.T. Chambers in 1875. It is recorded from western North America including California, Oregon, Colorado, British Columbia, and Mexico. Like other gelechiids, it is a small moth with larvae that likely feed on plant material, though specific host associations remain poorly documented. The species is rarely encountered in literature and its biology is largely unknown.

  • Gelechia sabinellus

    juniper gelechiid moth

    Gelechia sabinellus, known as the juniper gelechiid moth, is a small gelechiid moth native to Europe that has been introduced to Great Britain and North America through accidental transport in garden junipers. The species is univoltine, with adults active in August. Larvae are specialist feeders on Juniperus species.

  • Gelechiinae

    twirler moths

    Gelechiinae is a large subfamily of moths within the family Gelechiidae, first described by Henry Tibbats Stainton in 1854. The subfamily contains numerous species of small moths commonly known as twirler moths. Members of this subfamily are found globally and include many economically important agricultural pests. The group has been subject to extensive taxonomic revision, with molecular studies continuing to clarify relationships among its constituent tribes and genera.

  • Geometridae

    geometer moths, geometrid moths, inchworms, spanworms, loopers, cankerworms, measuring worms

    Geometridae is one of the largest families of moths, with approximately 23,000 described species worldwide. The family name derives from Greek "geo" (earth) and "metron" (measure), referring to the distinctive looping locomotion of their larvae, commonly called inchworms or loopers. These caterpillars possess only two or three pairs of prolegs at the posterior end, compared to five or more pairs in most other Lepidoptera, forcing them to arch their bodies in a characteristic "measuring" gait. Adults are typically nocturnal with slender bodies and broad wings, often exhibiting cryptic coloration that provides camouflage against bark and vegetation.

  • Geometroidea

    Geometrid and Swallowtail Moths

    Geometroidea is a superfamily of moths within Lepidoptera containing more than 24,000 described species across five families: Geometridae (the largest), Uraniidae, Epicopeiidae, Sematuridae, and Pseudobistonidae. The superfamily is notable for its exceptional diversity in form and habitat, with members ranging from small, cryptically colored inchworms to large, iridescent swallowtail moths. The family Geometridae alone represents one of the most species-rich lepidopteran families, with larvae commonly known as inchworms or loopers due to their distinctive locomotion.

  • Givira arbeloides

    Arbela Carpenterworm Moth

    Givira arbeloides is a small carpenterworm moth in the family Cossidae. It occurs in the south-central United States, with records from Arizona, Arkansas, Louisiana, Mississippi, and Texas. Adults are active from spring through fall, with a wingspan of approximately 27 mm. The species was originally described as Inguromorpha arbeloides by Dyar in 1899.