The zebra butterﬂy has a wingspan of about two and three-fourths to four inches. Its wings are black with yellow stripes, and the forewings are long and narrow. The hindwings have a row of yellow spots, too. The larva is white with bands of red and black and a yellow head.
The zebra butterﬂy is a rare stray into the southern one-half of Illinois. Its larva eats passion-ﬂower plants that contain a distasteful poison. After the transformation in the pupa stage, the poison is retained in the body of the adult. The pupa stage wriggles when disturbed and makes a noise. The adult lives in densely wooded areas. Adults roost in groups, returning to the same roost each night.