© 2018-20 by Neil Henning Björklund

Little Groundhog Mtn, Lane Co,  July 4

Western Tiger

Swallowtail

Papilio rutulus

Size: 2.75 - 3.75 inches wingspan

Key ID features:  Upperside yellow with vertical black bands, prominent tails, blue chevrons above long single tail. Below, very similar to above, with red-orange shading in yellow marginal spots near the tail.

Similar species:  Anise Swallowtail has more black on forewing; Pale Swallowtail much paler; Two-tailed Swallowtail is larger, has double tails, broader yellow bands. 

 

Host plant: Willows, maples, and many other native trees.

Habitat: Riparian areas, canyons, watersides, trail, parks, often near water.

Range: Throughout Oregon, often lower than Pale Swallowtail, but sometimes up to 7,000 feet.

Season: Mid-April - mid-August

Abundance: Very common

 

Conservation Status: Secure