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Northern Prairie Wildlife Research Center

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Caterpillars of Eastern Forests

Long-winged Dagger Moth (Acronicta longa)

JPG-Photo of Long-winged Dagger Moth

Generally dark above and becoming more mottled with red to venter. Dorsum of thorax and first abdominal segment with raised reddish warts, those of abdomen set with mostly stiff black setae. Pink to creamy dorsal patches on second to eighth abdominal segments; warts on these segments pale above spiracles and red below—both giving rise to mostly white setae. Red subspiracular stripe runs length of abdomen. Food: alders, birches, cherries, oaks, and others. Caterpillar: May to October; 1 generation in North.

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