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Pacific Dotted-Blue

(Euphilotes enoptes)

 

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Pacific Dotted-Blue (Euphilotes enoptes [Boisduval])

Wing span: 3/4 - 7/8 inches (1.8 - 2.3 cm).

Identification: Geographically variable. Upperside of male is lilac blue with dark borders; female is brown usually with an orange patch on margin of hindwing. Underside of both sexes is off-white with black spots. Those of forewing larger and mo

Life history: Dotted-Blues usually stay near their host plants. Males patrol around the host plants all day to find females. Eggs are laid singly on flowers or buds; caterpillars eat flowers and fruits and are tended by ants. Chrysalids hibernate

Flight: One flight from mid-May to October depending on host and location.

Caterpillar hosts: Various Eriogonum species including Nude Buckwheat, Wright's Buckwheat, Inflated Buckwheat, and others.

Adult food: Flower nectar, especially from Eriogonum.

Habitat: Sun-exposed rocky or sandy flats or slopes in foothills, mountains, desert, and along coast.

Range: Scattered distribution throughout the western United States from Washington south through Pacific Coast states to northern Baja California. Also Nevada and northwest Arizona.

Conservation: Smith's dotted-blue, Euphilotes enoptes smithi, is endangered because its California coastal habitat is being damaged by increased human activity including housing developments, recreation, and sand mining.

 

Pacific Dotted-Blue (Euphilotes enoptes)

Fall Flying

Spring Flying