Caterpillars in tent web on spindle tree

Caterpillars in tent web on spindle tree

Observation - Caterpillars in tent web on spindle tree. Description: These caterpillars strip the tree each year, then pupate in white cocoons in crevices on the wall below. The moth is small and dull.

These caterpillars strip the tree each year, then pupate in white cocoons in crevices on the wall below. The moth is small and dull.