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Bauer's Dotted-Blue

(Euphilotes baueri)

 

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Bauer's Dotted-Blue (Euphilotes baueri [Shields])

Wing span: 3/4 - 7/8 inches (1.9 - 2.2 cm).

Identification: Male pale blue above without orange hindwing band. Female gray-brown with blue scaling extensive to almost none. Orange aurora band on outer edge of hindwing ranging from medium to absent. Underside snowy white with distinct blac

Life history: Males patrol all day near host plants to find receptive females. Eggs are laid singly on host plant flowers; caterpillars eat flowers and fruits, and are protected by ants. Chrysalids hibernate in sand or leaf litter.

Flight: One flight; mid-April to late June.

Caterpillar hosts: Various wild buckwheats (Eriogonum species): limited to Kennedy, strict, and oval-leafed buckwheats.

Adult food: Flower nectar especially that from Eriogonum species.

Habitat: Dry slopes and flats with scattered short brush.

Range: East and northeastern California, Nevada, and western Arizona.

Conservation: Habitats may be susceptible to invasion by cheatgrass. Surveys should be undertaken.

The Nature Conservancy Global Rank: G2,G3 - for species. Imperiled because of rarity (6 to 20 occurrences), or because of other factors demonstrably making it very vulnerable to extinction throughout its range. (Endangered throughout its range).

 

Bauer's Dotted-Blue (Euphilotes baueri)