Single-brood
Guides
Abagrotis dodi
Abagrotis dodi is a noctuid moth described by James Halliday McDunnough in 1927. It occurs in western North America from southern Yukon through the Rocky Mountain region to Utah, Colorado, Nevada, and Washington. Adults fly in late summer with a single annual generation. The species is known from relatively few observations.
Automeris cecrops pamina
Automeris cecrops pamina is a subspecies of giant silk moth in the family Saturniidae, occurring in southwestern North America and Middle America. As a member of the Automeris genus, adults possess distinctive eyespots on the hindwings used for predator defense. The caterpillars bear urticating spines capable of delivering a painful sting. This subspecies represents the western portion of the broader Automeris cecrops species complex.
Callophrys affinis
Western Green Hairstreak, Immaculate Green Hairstreak
Callophrys affinis is a small butterfly in the family Lycaenidae, commonly known as the western green hairstreak or immaculate green hairstreak. It is found in western North America from western Canada through the western United States. Adults fly in a single generation from early spring to mid-summer. The larvae feed specifically on Eriogonum umbellatum.
Callophrys henrici
Henry's elfin, woodland elfin
Callophrys henrici, commonly known as Henry's elfin or woodland elfin, is a small North American butterfly in the family Lycaenidae. The species exhibits distinct population groups with different host plant associations: Atlantic Coast populations feed on various hollies (Ilex species), while northern and Appalachian populations use redbud (Cercis canadensis). The species has shown recent range expansion in New England due to adoption of introduced common buckthorn (Rhamnus cathartica) as a host plant. It is listed as a species of special concern in Connecticut.
Callophrys sheridanii
Sheridan's Hairstreak, Sheridan's Green Hairstreak
A small, tail-less hairstreak butterfly with a wingspan of 20–24 mm, recognized by the characteristic straight white line crossing the underside of both wings. The species exhibits variable underside coloration from bright green to dark gray-green. It was designated the state butterfly of Wyoming in 2009. The species occupies a broad elevational range and shows significant geographic variation in wing pattern expression.
Caradrina multifera
Speckled Rustic Moth, Speckled Rustic
Caradrina multifera is a noctuid moth known as the Speckled Rustic Moth. It occurs across eastern and central North America, with disjunct populations in the Pacific Northwest. Adults are active from July through October.
Catocala concumbens
Pink Underwing, Sleepy Underwing
Catocala concumbens, commonly known as the pink underwing or sleepy underwing, is a medium-sized moth in the family Erebidae. The species was first described by Francis Walker in 1858. It is distinguished by its cryptic forewings and brightly colored hindwings, a characteristic defensive trait of the genus Catocala. The moth occurs in eastern North America, extending westward across the Prairie Provinces to eastern Alberta. Adults are active in August, with larvae feeding on Populus and Salix species.
Catocala dulciola
Sweet Underwing, Quiet Underwing
Catocala dulciola, commonly known as the sweet underwing or quiet underwing, is a North American moth species in the family Erebidae. First described by Augustus Radcliffe Grote in 1881, this underwing moth exhibits the characteristic cryptic forewings and brightly patterned hindwings typical of its genus. The species has a documented wingspan of 40–45 mm and appears to have a single annual generation with adults active during early summer.
Catocala lincolnana
Lincoln underwing
Catocala lincolnana, the Lincoln underwing, is a moth in the family Erebidae described by Auburn Edmund Brower in 1976. It belongs to the genus Catocala, commonly known as underwing moths due to their brightly patterned hindwings concealed beneath cryptic forewings. Adults have a wingspan of 40–50 mm and are active from May to June. The species has one generation per year.
Catocala nebulosa
Clouded Underwing
Catocala nebulosa is a large underwing moth native to eastern and central North America. Adults are nocturnal and active from July to September, with a single generation per year. The species exhibits the characteristic underwing defense: cryptic forewings conceal brightly patterned hindwings that are flashed to startle predators. Larvae feed on bitternut hickory and black walnut.
Haploa clymene
Clymene Moth
Haploa clymene, the Clymene moth, is a tiger moth in the subfamily Arctiinae. Adults display distinctive creamy yellow forewings with partial brown-black borders and yellow-orange hindwings with dark spots. The species has one brood per year, with larvae overwintering and maturing in spring and early summer. It is found in eastern North America.
Oeneis uhleri reinthali
Oeneis uhleri reinthali is a subspecies of the Uhler's Arctic butterfly, a member of the Satyrinae subfamily within Nymphalidae. This subspecies occurs in the western interior of North America, specifically in the prairie provinces of Canada. Like other Oeneis species, it is associated with high-elevation or northern habitats and has a life cycle adapted to cooler climates.
Papilio multicaudata
Two-tailed Swallowtail
Papilio multicaudata, the two-tailed swallowtail, is a large butterfly species in the family Papilionidae found across western North America. It is distinguished from related tiger swallowtails by having two tails on each hindwing rather than one, and by the presence of a black 'slit pupil' in the orange eyespot on each hindwing. It is the largest swallowtail in western North America and serves as the state butterfly of Arizona. Adults fly during spring and summer with one brood per year.
Proserpinus vega
vega sphinx moth, Vega Sphinx
Proserpinus vega is a sphinx moth in the family Sphingidae, first described by Harrison Gray Dyar Jr. in 1903. It occurs in the southwestern United States and northern Mexico. Adults are active in August, fly during the afternoon, and nectar from flowers. The larvae feed on plants in the evening primrose family (Onagraceae).
Satyrium calanus
Banded Hairstreak
Satyrium calanus, the banded hairstreak, is a common North American butterfly in the family Lycaenidae. It is widely distributed east of the Rocky Mountains and exhibits territorial behavior. The species has a single annual brood with adults active from early June to late August. Larvae develop on oaks, hickories, and walnuts.
Speyeria hydaspe
Hydaspe fritillary
Speyeria hydaspe, the Hydaspe fritillary, is a small orange-brown butterfly of western North America. Adults are active from July through September and feed on flower nectar. The species is distinguished from similar fritillaries by its smooth, even postmedian spotband. A single brood occurs annually. Caterpillars feed on violets, particularly Viola glabella.
Zale duplicata
Pine False Looper Moth, Pine False Looper, Banded Similar-wing, Grey Similar-wing
Zale duplicata is a noctuid moth native to North American coniferous woodlands. Adults have a wingspan of 34–36 mm and are active from late May through June, with a single annual generation. The species was first described by Charles J. S. Bethune in 1865 and occurs across a broad geographic range from British Columbia to Nova Scotia, extending south to Georgia and Texas.