Altica bimarginata, the willow flea beetle is a species of flea beetle in the family Chrysomelidae. It is found in Central America and North America. It often is found feeding on plants from the Salix genus. It is shiny blue, being 5-6 mm long and 2-3 mm wide.

Subspecies These three subspecies belong to the species Altica bimarginata: Altica bimarginata bimarginata Say, 1824 Altica bimarginata labradorensis LeSage, 1993 Altica bimarginata plicipennis (Mannerheim, 1843)

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