Geometrid
Guides
Eupithecia prostrata
Eupithecia prostrata is a species of pug moth in the family Geometridae, described by James Halliday McDunnough in 1938. It is one of approximately 140 Eupithecia species known from North America. Members of this genus are commonly called 'pugs' and are recognized by their narrow wings and distinctive resting posture. The species has been documented visiting apple flowers at night, contributing to nocturnal pollination services.
Eupithecia purpurissata
Eupithecia purpurissata is a small geometrid moth described by John Arthur Grossbeck in 1908. It is endemic to California, with two recognized subspecies: the nominate form in northern and central California, and E. p. valariata in southern California. Adults have been recorded from February to July. The species has been documented visiting apple flowers, contributing to nocturnal pollination services.
Eupithecia ravocostaliata
tawny eupithecia, great variegated pug
Eupithecia ravocostaliata is a small geometrid moth commonly known as the tawny eupithecia or great variegated pug. First described by Alpheus Spring Packard in 1876, this species occurs across northern North America from the northeastern United States through Canada to the Pacific coast. It is a member of the diverse pug moth genus Eupithecia, characterized by narrow wings and distinctive resting postures. The species has been documented visiting apple flowers, contributing to nocturnal pollination services.
Eupithecia russeliata
A small North American geometrid moth first described in 1908. Adults are active from May through October and have been documented visiting apple flowers at night, contributing to nocturnal pollination. The species is widespread across Canada and the United States, with larvae feeding on spruce and possibly other conifers.
Eupithecia sheppardata
Alder Looper
Eupithecia sheppardata is a small geometrid moth in the family Geometridae, first described by James Halliday McDunnough in 1938. It belongs to the large genus Eupithecia, commonly known as 'pugs,' characterized by narrow wings and a distinctive resting posture. The species has been documented as a nocturnal visitor to apple flowers, contributing to pollination services. It occurs in northeastern North America.
Eupithecia strattonata
Spirea Looper
Eupithecia strattonata, commonly known as the Spirea Looper, is a small geometrid moth found in eastern North America. Adults have a wingspan of approximately 17 mm and are active during June and July. The species inhabits damp, open wetlands including marshes, bogs, and abandoned pastures. Larvae feed on Alnus (alders) and Spiraea species, with one documented instance of feeding on Actaea rubra fruit. The species has been documented visiting apple flowers, contributing to nocturnal pollination services.
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 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 vargoi
Eupithecia vargoi is a species of inchworm moth in the family Geometridae. Like other members of the genus Eupithecia, it is characterized by narrow wings and a distinctive resting posture. The species has been documented visiting apple flowers at night, contributing to nocturnal pollination of fruit crops. It belongs to a diverse genus of small moths commonly known as "pugs," many of which are challenging to identify to species level without detailed examination.
Eupithecia vitreotata
Eupithecia vitreotata is a small geometrid moth described by Samuel E. Cassino in 1927. It belongs to the diverse 'pug' genus Eupithecia, characterized by narrow wings and a distinctive resting posture. The species occurs in the southwestern United States and has been documented visiting apple flowers, contributing to nocturnal pollination.
Eusarca packardaria
Packard's Eusarca Moth, Packard's eusarca
A geometrid moth species in the family Geometridae, native to North America. The species was originally described as Apicia packardaria by McDunnough in 1940 before being transferred to the genus Eusarca. It is recorded in major North American moth collections and has accumulated over 300 observations on citizen science platforms. The species is assigned Hodges number 6936 in the North American moth numbering system.
Glaucina eureka
Glaucina eureka is a species of geometrid moth in the family Geometridae, first described by Grossbeck in 1912. It is assigned MONA/Hodges number 6515. The species occurs in North America. Like other members of the genus Glaucina, it is classified within the subfamily Ennominae. Very little species-specific information has been documented beyond its taxonomic placement and geographic distribution.
Glaucina lowensis
Glaucina lowensis is a species of geometrid moth described by Cassino & Swett in 1925. It belongs to the subfamily Ennominae, a diverse group of moths commonly known as inchworms or loopers due to their distinctive larval locomotion. The species is recorded from North America, though specific details about its biology remain poorly documented in the scientific literature.
Glena cognataria
Blueberry Gray, blueberry gray moth
Glena cognataria, commonly known as the blueberry gray moth, is a small geometrid moth native to eastern North America. Adults have forewings measuring 13–15 mm. The species is associated with bogs and pine barrens habitats, with larvae feeding primarily on blueberry and various hardwood species. It is listed as a species of special concern in Connecticut, where it is believed extirpated.
Haematopis grataria
Chickweed Geometer Moth, Chickweed Geometer
Haematopis grataria, the Chickweed Geometer Moth, is a species of geometrid moth found throughout North America. It is a common and dependable species during National Moth Week events, frequently observed in eastern Kansas and other regions. The species belongs to the family Geometridae, known for their characteristic looping movement of caterpillars. Males have been documented at light sheets and flushed from vegetation during daytime hours.
Heliomata cycladata
common spring moth
Heliomata cycladata is a small geometrid moth known as the common spring moth, first described in 1866. It occurs across eastern North America from southern Canada through the eastern United States. Adults fly in spring and early summer, with larvae specializing on two leguminous tree hosts.
Herreshoffia gracea
Herreshoffia gracea is a species of moth in the family Geometridae, described by Sperry in 1949. It belongs to the subfamily Larentiinae, a diverse group of carpet moths. The species has been placed in the genus Orthonama by some authorities, creating taxonomic uncertainty. Very few observations of this species have been documented.
Hesperumia sulphuraria
Sulphur Moth, Sulphur Wave
Hesperumia sulphuraria, commonly known as the sulphur moth or sulphur wave, is a species of geometrid moth in the family Geometridae. The species was described by Packard in 1873. It is found across North America, with distribution records from Canada (Alberta, Manitoba, Saskatchewan) and the United States (Vermont). The species has been observed at light in juniper/pinyon chaparral habitat in Mesa County, Colorado.
Holochroa dissociarius
Holochroa dissociarius is a geometrid moth species described by Hulst in 1887. It was originally described under the genus Tornos before being transferred to Holochroa. The species is known from North America and is one of approximately 35,000 described species in the family Geometridae, commonly known as inchworm or geometer moths.
Hydriomena cochiseata
Hydriomena cochiseata is a moth species in the family Geometridae, subfamily Larentiinae, described by Swett in 1909. It is a member of the diverse genus Hydriomena, which comprises numerous species primarily distributed in the Northern Hemisphere. The species epithet references Cochise, a prominent leader of the Chiricahua Apache, suggesting a southwestern North American origin. Like other Hydriomena species, it is presumed to have a larval stage feeding on woody plants, though specific host associations remain undocumented.
Hydriomena irata
Furious Carpet Moth
Hydriomena irata is a species of geometrid moth in the subfamily Larentiinae, described by Swett in 1910. It is known from North America and has three recognized subspecies. The species is commonly referred to as the Furious Carpet Moth.
Hymenomima umbellularia
Hymenomima umbellularia is a species of geometrid moth in the family Geometridae. The species name references its association with California bay laurel (Umbellularia californica), indicating a specialized ecological relationship with this host plant. It is primarily known from western North America, particularly California. Adults are active during spring and early summer. The species has been documented through 191 iNaturalist observations, suggesting moderate but localized abundance within its range.
Hypagyrtis
Hypagyrtis is a genus of geometrid moths erected by Jacob Hübner in 1818. The genus has experienced taxonomic instability, having been assigned to multiple tribes including Melanolophiini, Bistonini, and currently Boarmiini. It contains seven recognized species distributed in North America, with Hypagyrtis unipunctata being the most widely documented. The genus is well-represented in citizen science observations.
Hypagyrtis unipunctata
One-spotted Variant, one-spotted variant moth, white spot
Hypagyrtis unipunctata is a geometrid moth widely distributed across North America and Eurasia. Adults display considerable wing pattern variation, with the characteristic single white spot being variable in presence and intensity. The species exhibits extended flight activity from spring through late summer, with one to two generations annually. Larvae are generalist feeders on deciduous trees and shrubs.
Hypomecis buchholzaria
blue spiderwort moth, Buchholz's gray, Buchholz' Gray
Hypomecis buchholzaria is a geometrid moth species in the family Geometridae, first described by Lemmer in 1937. It is commonly known as the blue spiderwort moth or Buchholz's gray. The species is found in North America and has been assigned Hodges number 6438. It belongs to the subfamily Ennominae, a diverse group of geometrid moths often referred to as "geometers" or "inchworms" due to their characteristic larval locomotion.
Idaea violacearia
Violet Wave
Idaea violacearia is a species of geometrid moth in the family Geometridae, commonly known as the Violet Wave. It is found in North America and has been assigned MONA/Hodges number 7120. The species was first described by Francis Walker in 1861.
Iridopsis cypressaria
cypress looper
Iridopsis cypressaria is a geometrid moth in the subfamily Ennominae. The species was described by Grossbeck in 1917. It is recorded from North America. The MONA or Hodges number for this species is 6571.
Iridopsis dataria
Iridopsis dataria is a geometrid moth species distributed across North and Central America. The species was described by Grote in 1882 and is classified within the subfamily Ennominae. Larvae of related Iridopsis species have been documented as occasional pests of soybean, though specific records for I. dataria on this host are limited. The species is recognized by taxonomic authorities including Catalogue of Life and GBIF.
Iridopsis defectaria
Brown-shaded Gray, brown-shaded gray moth
Iridopsis defectaria is a geometrid moth commonly known as the Brown-shaded Gray. It is widely distributed across eastern and central North America, ranging from Pennsylvania west to Iowa and Kansas, south to Texas, and east to Florida. Adults are nocturnal and attracted to light. The species was previously classified under the genus Anacamptodes, which has since been synonymized with Iridopsis.
Iridopsis emasculatum
Tarnished Gray
Iridopsis emasculatum is a geometrid moth species in the subfamily Ennominae, commonly known as the Tarnished Gray. It occurs in North America and is one of numerous species in the genus Iridopsis, which includes several soybean-associated caterpillars. The species was described by Dyar in 1904.
Iridopsis humaria
small purplish gray
Iridopsis humaria, commonly known as the small purplish gray, is a species of geometrid moth in the family Geometridae. The species is assigned MONA/Hodges number 6584. Larvae of this species have been documented feeding on soybean (Glycine max) as a favored host plant. The species belongs to a genus whose larvae are known for their distinctive 'inching' locomotion characteristic of geometrid caterpillars.
Iridopsis pergracilis
cypress looper moth, Cypress Gray
Iridopsis pergracilis, commonly known as the cypress looper moth or Cypress Gray, is a geometrid moth species described by George Duryea Hulst in 1900. The species occurs in the eastern United States from Maryland to Florida. Adults have a wingspan of 26–28 mm. The larvae are specialized feeders on Taxodium distichum (bald cypress), including the variety T. distichum var. nutans.
Iridopsis pseudoherse
Iridopsis pseudoherse is a species of geometrid moth in the subfamily Ennominae, described by Rindge in 1966. It belongs to a genus whose larvae are known as inchworms or loopers, characterized by their distinctive locomotion using only prolegs at the body extremes. The species is part of a group that includes some soybean-feeding members, though specific host associations for I. pseudoherse remain undocumented.
Knudsonia lathraeata
Knudsonia lathraeata is a species of geometrid moth described in 2021 by Matson and Ferguson. It belongs to a recently established genus within the family Geometridae. The species is known from very few observations, reflecting either rarity or limited survey effort in its range.
Lambdina pellucidaria
pitch pine looper, eastern pine looper, yellow-headed looper, yellow-headed looper moth
Lambdina pellucidaria is a geometrid moth found in eastern North America, commonly known as the pitch pine looper or yellow-headed looper. The species is associated with pine habitats and has been documented feeding on pitch pine, red pine, and other hard pines, as well as oak. Adults are active from March to June with regional variation, and exhibit nocturnal pheromone-mediated mating activity between midnight and 3 AM. Larvae are distinctive loopers that mine needles rather than consuming them completely, a trait that aids in identification.
Lambdina pultaria
southern oak looper
Lambdina pultaria, the southern oak looper, is a geometrid moth found in North America. The species belongs to the genus Lambdina, which includes several oak-feeding loopers. It is assigned MONA/Hodges number 6889. The larva is a documented host for the ichneumonid parasitoid wasp Coccygomimus sanguinipes.
Lampropteryx suffumata
Water Carpet, Water Carpet Moth
A small to medium-sized geometrid moth with a wingspan of 25–32 mm, characterized by brownish forewings with distinctive whitish lateral bands and a serrated dark midfield. The species has a remarkably broad distribution spanning the entire Holarctic, from Ireland across Eurasia to Alaska and western Canada. Adults are active in spring, with larvae feeding exclusively on Galium species. The species overwinters as a pupa in a silken cocoon spun among the host plant.
Leptostales crossii
Cross's wave moth, Cross' Wave
Leptostales crossii is a species of geometrid moth in the subfamily Sterrhinae, commonly known as Cross's wave moth. It is characterized by wave-patterned forewings typical of its genus. The species was described by George Duryea Hulst in 1900. It is documented in North America with a moderate number of citizen science observations.
Leptostales rubromarginaria
Dark-ribboned Wave, Dark-ribboned Wave Moth
Leptostales rubromarginaria, known as the dark-ribboned wave, is a geometrid moth first described by Packard in 1871. It belongs to the subfamily Sterrhinae, a group commonly referred to as waves due to their characteristic wing patterns. The species is recorded across North America with over 400 iNaturalist observations, indicating it is moderately well-documented. Its MONA/Hodges number is 7179, a standard North American lepidopteran cataloging identifier.
Lomographa semiclarata
Bluish Spring Moth, Wild Cherry Looper
Lomographa semiclarata is a geometrid moth commonly known as the Bluish Spring Moth or Wild Cherry Looper. It occurs across North America and has been recorded in Canadian provinces including Alberta, Manitoba, and Saskatchewan, as well as the United States. The species is assigned MONA/Hodges number 6666. The common name 'Wild Cherry Looper' suggests larval association with Prunus species, though this relationship requires verification.
Macaria adonis
Macaria adonis is a geometrid moth first described from North America in 1918. The species belongs to a large genus of moths commonly known as angle shades or barberries. Its MONA/Hodges number is 6338. Specific information about its biology, host plants, and ecology remains limited in published sources.
Macaria deceptrix
Deceptive Angle
Macaria deceptrix, known as the Deceptive Angle, is a species of geometrid moth in the family Geometridae. It was described by Dyar in 1913. The species belongs to the subfamily Ennominae, a diverse group of geometer moths. Observations suggest it occurs in North America, though detailed ecological studies remain limited.
Macaria loricaria
False Bruce spanworm, Eversmann's peacock
Macaria loricaria is a geometrid moth with pronounced sexual dimorphism: males are fully winged with a wingspan of 25–29 mm, while females are wingless. The species has a broad transcontinental distribution spanning northern Eurasia from Fennoscandia to Sakhalin, and North America from Alaska to Newfoundland and south to Colorado. Adults are active in mid-summer, with timing varying by region. The larvae feed on willow, birch, and aspen species.
Macaria lorquinaria
Lorquin's Angle
Macaria lorquinaria is a species of geometrid moth commonly known as Lorquin's Angle. It belongs to the diverse family Geometridae, known for their characteristic resting posture with wings held flat. The species was first described by Guenée in 1858. Based on iNaturalist observations, it appears to be a relatively well-documented species with over 360 records.
Macaria sanfordi
Sanford's Angle
Macaria sanfordi is a geometrid moth species described by Rindge in 1958. It belongs to the subfamily Ennominae within the diverse Geometridae family. The species is known from North America and has been documented in limited observations. It is assigned Hodges number 6337 in the North American moth classification system.
Macaria transitaria
Blurry Chocolate Angle
Macaria transitaria is a small geometrid moth commonly known as the blurry chocolate angle. It is native to North America and recognized by its relatively compact wingspan of 23–26 mm. The species is associated with pine forests, as its larvae feed on Pinus species.
Metarranthis obfirmaria
Yellow-washed Metarranthis
Metarranthis obfirmaria is a small geometrid moth of eastern North America. Adults fly in spring and early summer, with larvae feeding on woody plants including blueberries, cherries, and oaks. The species was originally described under the genus Epirranthis.
Monostoecha
Monostoecha is a monotypic moth genus in the family Geometridae, established by David Stephen Fletcher in 1979. The genus contains a single species, Monostoecha semipectinata, originally described by George Duryea Hulst in 1898. The genus is native to the American Southwest.
Nemoria elfa
Cypress Emerald, cypress emerald moth
Nemoria elfa, known as the cypress emerald moth, is a North American species of emerald moth in the family Geometridae. It was described by Ferguson in 1969. The species belongs to the genus Nemoria, a group of small green moths commonly called emeralds. It is assigned Hodges number 7029 in the North American moth numbering system.