The forest tent caterpillar (Malacosoma disstria), walnut caterpillar (Datana integerima), and walkingstick (Diapheromera femorata) may defoliate individual trees or limbs.
Datana |
The larvae typically feed on only one family of trees, but closely related species will feed on distantly related plants; for example different members of the genus Datana feed on Juglandaceae, Hamamelidaceae, Ericaceae and Anacardiaceae (Miller 1992).