Wednesday, December 10, 2008

Swallowtail butterfly

The Anise Swallowtail, Papilio zelicaon, is a common swallowtail butterfly of western North America. Both the upper and lower sides of its wings are black, but the upper wing has a broad yellow stripe across it, which gives the butterfly an overall yellow appearance. There are striking blue spots on the rear edge of the rear wing, and the characteristic tails of the swallowtails. Its wingspan is 7-9 cm.The caterpillar is green, with dark bands spotted with yellow. Its major food plants are members of the carrot family, Apiaceae, (including fennel), and also some members of the citrus family.

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