Walnut Caterpillars

I noticed a large, white, fuzzy mass at the base of a walnut tree at our barn. The fussy mass was a grathering of walnut caterpillars (Datana integerrima) as they molt to shed their exoskeletons and leave behind a dense, fur-like clump of discarded hairy skins.

Some of the walnut caterpillars in the process of molting their hairy exoskeletons.