Papilio brevicauda


Papilio brevicauda, the short-tailed swallowtail, is a North American butterfly in the family Papilionidae.

Description

The short-tailed swallowtail is very similar to the male black swallowtail but has shorter tails, and the forewing tip is rounder. The yellow bands of spots on the upperside of the wings are often more orange.

Habitat

This butterfly primarily breeds on Scotch lovage and is often found very near the ocean where its larval stage food sources grow. It is especially fond of headlands with Scotch lovage and members of the parsley family, including cow parsnip, angelica. It is a very strong flier so windy locations are not an issue.

Flight

The short-tailed swallowtail is on the wing from mid-June to July.

Life cycle

Males will seek females by awaiting them on hilltops. Females lay their eggs singly on host plant leaves. The eggs are cream and later obtain a reddish-brown ring. The pale green to creamish-green larva has black bands between segments with yellow spots on the black bands. The chrysalis is either green or black brown. The chrysalis hibernates. The short-tailed swallowtail has one brood per year, sometimes having a second partial brood.

Host plants

Here is a list of host plants used by the short-tailed swallowtail: