Synonyms and other taxonomic changes
Orig. Comb: Papilio vanillae Linnaeus 1758
Wingspan 63 - 95 mm (2 1/2 - 3 3/4 inches).
Below, the elongated silvery spots on the butterfly's hind wings and the edge of its forewings are unmistakable. Above, bright orange with black markings around the border and three black-rimmed white spots on each forewing.
Larvae are generally orange with black branched spines and greenish-black stripes.
There is a larval variant with purple/lavender stripes, seen mostly in Texas.
Eggs are yellow, laid singly on leaves of host plants.
NM-FL-NJ-CO, CA / W. Indies / Mex. to southern S. Amer. (MPG data)
Adults move northward in spring and form temporarily breeding colonies throughout the southeast. Individual vagrants may occasionally reach into the central U.S., but rarely into the Midwest. Starting in late summer and continuing through fall, huge numbers of adults migrate southward into peninsular Florida.
mostly: Mar-Nov (MPG data)
Larvae feed on Passion Flower - Passiflora spp.
Zebra Longwing caterpillars also host on Passiflora. They are white with black spines and brown spots.