Size: 2.75 - 3.25 inches wingspan

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Key ID features:  Above pale, yellowish white with vertical bands of black on forewing, long single tails, blue chevrons on black band near hindwing margin. Similar pattern below, with red-orange shading in ivory marginal spots near the tail.

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Similar species:  Western Tiger Swallowtail is brighter yellow and has slightly narrower black bands on forewing 

 

Host plant: Many shrubs and small trees including ceanothus, alder, cascara, and buckthorn.

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Habitat: Can be found in any forest or shrubby habitat, and especially on ridges, along roads and in riparian corridors

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Range: Throughout western Oregon, and in Ochoco Mtns, Strawberry Mtns, Blue Mtns, Wallowa Mtns.

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Season: Mid-April - early October

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Abundance: Common

 

Conservation Status: Secure