May 20, 2022 by mgnvmmfBlack_swallowtail_caterpillar_beginning_to_molt_1.37_pm_MMF Eastern black swallowtail (Papilio polyxenes) caterpillar before molt at 1:37 pm.Photo © Mary Free About mgnvmmf Previous Post:Black_swallowtail_caterpillar_beginning_to_molt_1.37_pm_MMF