caterpillar
Nelson Lake Marsh, Kane County, Illinois
July 20, 2002
The caterpillars feed in colonies, so they are easy to spot. Willow is one of their food plants.
Photo by Tom Peterson
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Mourning Cloak (Nymphalis antiopa) caterpillar Nelson Lake Marsh, Kane County, Illinois July 20, 2002 The caterpillars feed in colonies, so they are easy to spot. Willow is one of their food plants. Photo by Tom Peterson |