Stock Photo: Black Swallowtail caterpillar, late instar, on Italian parsley in garden, defensive glands everted (Papilio polyxenes asterius) Ithaca, NY

Stock Photo: 4179-15206 Black Swallowtail caterpillar, late instar, on Italian parsley in garden, defensive glands everted (Papilio polyxenes asterius) Ithaca, NY