Loki Juniper Hairstreak

Callophrys gryneus loki

Classification

Phylum: Arthropoda
Subphylum: Hexapoda
Class: Insecta
Order: Lepidoptera
Superfamily: Papilionoidea
Family: Lycaenidae
Subfamily: Theclinae
Tribe: Eumaeini
Genus: Callophrys
Species: gryneus
Subspecies: loki

Pronunciation

How to pronounce Callophrys gryneus loki: /ˈkæləfɹɪs ˈɡɹɪniəs ˈloʊki/

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Summary

Callophrys gryneus loki, or Loki Juniper Hairstreak, is a butterfly subspecies found in Southern California. It has a characteristic appearance with dark markings on the hindwings and feeds on junipers. The lifecycle varies among its related subspecies, with some having a distinct number of broods per year.

Physical Characteristics

Distinctive dark brownish markings across the disk of the hind wing, often forming a wide median band bordered by a white margin. Coloration varies from brown to greenish or bluish with a distinct purplish cast on the underside.

Identification Tips

Look for the dark band inward of the white postmedian line on the hindwing. Variation in coloration can help differentiate individuals.

Habitat

Found in bluffs, open fields, barrens, and dry or rocky areas, typically near or on juniper trees.

Distribution

Southern California, particularly west from deserts and south from Riverside County, predominantly in mountainous areas.

Diet

Larvae primarily feed on Juniperus species (junipers).

Life Cycle

Males are territorial, often seen perching on cedar trees. Eggs are laid singly on the tips of host plant leaves. Overwinters as a chrysalis.

Reproduction

Females lay eggs at the tips of leaves on host plants individually. Depending on the subspecies, the number of broods per year varies significantly.