defoliated are weakened and rendered unsightly. Damage to forest trees is usually 
not very severe (699): however, heavy infestations do occur occasionally in stands 
of Atlantic white-cedar and black locust, especially in the Deep South. 
Low winter temperatures, bird predation, and parasitism by the ichneumonid, 
Itoplectis conquisitor (Say), are often particularly effective in bagworm control. 
Handpicking and burning of overwintering bags is also helpful in control, es- 
pecially on small trees and ornamentals (/349). 
Cryptothelea gloverii (Packard) occurs from South Carolina to Florida and 
westward along the Gulf Coast. Its hosts are recorded as two species of scale 
insects, and persimmon, oak, hickory, acacia, hawthorn, and sour orange. The 
male moth is dark or dark red and has a wingspread of 14 to 18 mm. Females are 9 
to 10 mm long. Their cases may be covered with fragments of scale insects, bark, 
fruit rinds, or leaves. 
A, F-508522 
B, Courtesy H. G. Schabel, Univ. Wis. 
Figure 40.—Larval cases of the bagworm, Thyridopteryx 
ephemeraeformis: A, cases on an infested tree; B, 
closeup of cases. 
127 
