The larger boxelder leafroller (Archips negundana) is a green caterpillar found on Manitoba maple (boxelder) trees during spring and early summer. The caterpillar feeds on the leaves, webbing them together with silk. If disturbed, the larva quickly drops from the tree, suspended by a silken thread.
Caterpillar webbing and feeding damage looks unsightly. Dead foliage often bleaches, giving the tree a whitish appearance. Heavy infestations can result in complete defoliation of the tree.