Adult moths emerge about July, mate, and then lay eggs to repeat the cycle. Fore-wings of adults are warm brown with a darker cross-band lightly outlined above and below.
Tent caterpillars are not a danger. Although enough tent caterpillars can defoliate a small tree, the tree will grow a second batch of leaves if it is not compromised by other diseases or stresses. However, the tree may not grow as much as it would have without the pests present. Because no new eggs will be hatched on the tree that season, those leaves will remain. Some people try to get rid of the tents by burning them, but this is not recommended due to the fire hazard. Preventative approaches include removal of egg masses before they hatch in the spring, or physically removal of the tent when most of the caterpillars are within it.