Western Tiger Swallowtail
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Description
Large and yellow with black stripes. Above, the marginal spot along the hindwing leading edge is yellow, rather than orange as on Eastern and Canadian Tiger Swallowtails -- but this can be difficult to see.
Habitat
Woodlands.
Flight Period
Mostly June-July; March-Oct in some areas with two broods.
Caterpillar Foodplants
Aspens, willows and other trees.
Other Notes
Seems to be less tolerant of suburban development than Eastern Tiger Swallowtail.
Scientific Information
