Caterpillars of Eastern Forests

Eastern Tiger Swallowtail (Papilio glaucus)

Green dorsum grading to pale venter. Third thoracic segment with small yellow "eyes" with black and white pupil and black bar toward midline. Posterior edge of first abdominal segment with transverse yellow bar that is concealed in intersegmental fold at rest. Dorsum of ninth abdominal segment with low transverse ridge. Canadian tiger swallowtail (P. canadensis) has but 1 generation, occurs across northern states and southern Canada, and eats alders, birches, cherries, poplars, and willows. Food: many trees and shrubs in apple, magnolia, ash, birch, and willow families. Caterpillar: April to November; 3 or more generations in South, 2 generations in North.

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