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Project Noah Nature School
Papilio machaon oregonius
The adult Oregon Swallowtail has a yellow abdomen with black lines. It has a wingspan of 2.5 inches (6.4 cm) to 4 inches (10 cm). Its wings have concave spots that are scalloped inwards with a reddish-orange eyespot along the lower border, similar to, but smaller than, the eyespot of the common Old World Swallowtail.
The range of the Oregon Swallowtail is from southern British Columbia, eastern Washington and Oregon, to Idaho and western Montana, primarily in the lower sagebrush canyons of the Columbia River and many of its tributaries.
Spotted on May 31, 2011
Submitted on Jun 3, 2011
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