Northern Prairie Wildlife Research Center
Brown or gray with herringbone pattern along dorsum and indistinct brownish middorsal and subdorsal stripes. Head brownish with mottling especially dense to either side of triangle. First thoracic segment with shield dark above and tan to either side. Spiracular stripe pale to brown, edged with dark above. Setal bases white. L. bethunei, L. hemina, and other pinions have similar caterpillarsrearing to adult should be attempted to confirm identifications. Food: many deciduous trees and shrubs, conifers, and even other caterpillars. Caterpillar: April to June; 1 generation.