Butterfly genus species - The American Snout ( Libytheana carinenta ) AMERICAN SNOUT BUTTERFLY The American Snout ( Libytheana carinenta ) is a butterfly that has long labial palps (mustache-like scaly mouthparts on either side of the proboscis) tha t look like a long snout. The butterfly has a 1 3/8 - 2 inch (3.5 - 5 cm) wingspan. The front pair of legs on the male (but not the female) are reduced in size. Eggs are laid in groups on the hackberry plant. The caterpillar eats hackberry (celtis); the adult sips nectar of the flowers from asters, dogbane, dogwood, goldenrod, sweet pepperbush, and more. Adult American Snout butterflies look like dead leave s. They sometimes go on long migrations. They are brush-footed butterflies (Family Libytheidae). Butterfly genus species - American Snout