Fall Webworm Moth (Larvae)

Adult: wings either all white (in northern and some southern individuals) or sparsely to heavily marked with dark grayish-brown to black spots (in many southern individuals); spots rectangular or wedge-shaped, arranged loosely in rows in basal half of wing, and in either a V-shape or more-or-less random arrangement in distal half; ventral side of prothorax and femur of foreleg with orange hairs; hindwing either all white or with one or two black spots
Larva: two distinct races - northern larvae have black head, yellowish or greenish body with dark dorsal stripe and long whitish hairs arising from black and orange tubercles located along sides (in each cluster of hairs, at least one hair is about twice as long as the others); southern larvae have orange or reddish head, yellowish-tan body with orange to reddish tubercles and brownish hair. Wagner(1) lists extremely long hairs, "greater in length than four or five body segments," as an identifying characteristic.