Callophrys affinis apama

W.H. Edwards, 1882

Western Green Hairstreak

Callophrys affinis apama is a of the western green hairstreak , 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 is associated with open where its larval plants grow. are active in spring and early summer, with a rapid, low pattern typical of butterflies.

Callophrys affinis apama by no rights reserved, uploaded by Robbie Hannawacker. Used under a CC0 license.

Callophrys affinis apama by Robb Hannawacker. Used under a CC0 license.

Pronunciation

How to pronounce Callophrys affinis apama: /kəˈlɒfrɪs əˈfɪnɪs əˈpeɪmə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Distinguished from other by the predominantly green coloration of upper wing surfaces. C. affinis apama can be separated from other C. affinis by geographic range and subtle differences in wing pattern, though identification to subspecies level often requires locality data. Similar species include C. dumetorum (bramble hairstreak) and C. sheridanii (Sheridan's hairstreak), which differ in wing pattern details and geographic distribution. The green coloration separates it from gray or brown hairstreaks such as Satyrium species.

Images

Habitat

Open, sunny including grasslands, sagebrush steppe, open woodlands, and forest edges. Associated with areas supporting larval plants in the Ericaceae and Grossulariaceae . Elevation range extends from lowlands to subalpine zones depending on latitude.

Distribution

Western North America. The C. affinis apama occurs in the Rocky Mountain region and adjacent areas, with records from Colorado documented in the source material. The broader C. affinis ranges from western Canada through the western United States.

Seasonality

fly in spring and early summer, typically April to July depending on elevation and latitude. Single brooded in most of range; peak period varies with local climate conditions.

Diet

Larvae feed on in Ericaceae and Grossulariaceae, including manzanita (Arctostaphylos), currants (Ribes), and related shrubs. have been observed taking nectar from small flowers and visiting damp ground for moisture.

Host Associations

Arctostaphylos - larval plantManzanita used as food source for larvae
Ribes - larval plantCurrant and gooseberry

Life Cycle

Complete with four stages: , larva, pupa, . Eggs laid singly on plant buds or flowers. Larvae feed on host plant tissues, developing through several instars. occurs on or near host plant. stage varies; may be as egg or pupa depending on and locality. Adults emerge in spring.

Behavior

fly rapidly and close to the ground, often perching with wings closed. When perched, hindwing tails are often wagged to distract potential from the . Males establish territories and perch on prominent vegetation to await females. Both sexes visit flowers for nectar.

Ecological Role

of small flowers during period. Larvae serve as herbivores on shrubs. Prey for birds, spiders, and insect . Part of in western North American open .

Human Relevance

Subject of interest for watchers and collectors. Used as for quality in western . No significant economic impact; not considered a pest .

Similar Taxa

Callophrys dumetorumSimilar size and but differs in wing pattern with more prominent white markings and less uniform green coloration
Callophrys sheridaniiOverlapping range but differs in hindwing pattern details and typically occurs at higher elevations
Satyrium speciesOther butterflies that differ in gray or brown coloration rather than green

More Details

Taxonomic status

GBIF lists C. affinis apama as a synonym of C. apama, indicating taxonomic uncertainty or reclassification in some treatments. The is part of a complex showing geographic variation across western North America that has been variously treated as subspecies or full by different authors.

Conservation

Not listed as threatened or endangered. loss from development and fire suppression may impact local . Climate change effects on montane and sagebrush habitats are potential concerns.