Spring-butterfly
Guides
Callophrys affinis apama
Western Green Hairstreak
Callophrys affinis apama is a subspecies of the western green hairstreak butterfly, a small lycaenid found in western North America. It is one of several subspecies within the C. affinis complex, which shows geographic variation across its range. The species is associated with open habitats where its larval host plants grow. Adults are active in spring and early summer, with a rapid, low flight pattern typical of hairstreak butterflies.
Celastrina echo echo
Pacific Azure, Echo Azure, Western Azure
Celastrina echo echo, commonly known as the Pacific Azure, is a subspecies of small blue butterfly in the family Lycaenidae. It occurs in western North America, particularly in California and neighboring states. The subspecies is associated with specific host plants including California buckeye (Aesculus californica) and various Ceanothus species. Adults are active in spring, with flight timing varying by elevation and latitude.
Celastrina serotina
Cherry Gall Azure
Celastrina serotina is a small butterfly in the family Lycaenidae, commonly known as the cherry gall azure. It occurs across North America from the treeline southward. The species is notable for its unusual larval diet: caterpillars feed on galls produced by eriophyid mites (particularly Eriophyes cerasicrumena) on cherry, and have been reported to consume the mites themselves—one of the few documented cases of carnivory in Lepidoptera. Adults fly in a narrow window between mid-May and mid-June in eastern North America, emerging after the spring azure (C. ladon) and before the summer azure (C. neglecta).
Erynnis baptisiae
wild indigo duskywing
Erynnis baptisiae, commonly known as the wild indigo duskywing, is a skipper butterfly in the family Hesperiidae. It is native to eastern and central North America, ranging from southern Ontario and New England west to Nebraska and south to Texas and the Gulf Coast. The species is strongly associated with leguminous host plants, particularly wild indigo (Baptisia) species, from which it derives both its common and scientific names. It has been observed in prairie, open woodland, and grassland habitats.
Erynnis juvenalis clitus
Clitus Duskywing
Erynnis juvenalis clitus is a subspecies of the Juvenal's Duskywing skipper, a small brown butterfly in the family Hesperiidae. It is distributed across central and eastern North America, with records from Canada through the United States. The subspecies is active in early spring, with adults flying from April through May. It is one of several difficult-to-distinguish duskywing skippers in the genus Erynnis.
Erynnis juvenalis juvenalis
Northern Juvenal's Duskywing, Juvenal's Duskywing
Erynnis juvenalis juvenalis is a subspecies of duskywing skipper butterfly in the family Hesperiidae. It is active in early spring, with adults flying during April and May. The species is notoriously difficult to identify from related taxa based on dorsal wing patterns alone. It has been documented in prairie and fen habitats in the central United States.
Euchloe hyantis
pearly marble, pearly marblewing, California marble
A small Pieridae butterfly of western North America with distinctive marbled underwings. Adults fly in spring and early summer, with one generation annually. Males exhibit hilltopping behavior along ridgelines. The species has been documented feeding on Brassicaceae flowers and fruits, particularly Streptanthus species. Chrysalids overwinter.