On a couple of small prickly ash (the larval food source up this way for the species), we found 8 caterpillars. This one has its osmeterium extended, something swallowtail caterpillars do as a means of scaring off predators. In more southerly areas, they feed on orange trees, giving rise to the name Orange Dog. To see the spectacular butterfly they become: http://www.pbase.com/laroseforest/image/157084467
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