448 MISC. PUBLICATION 657, U. S. DEPT. OF AGRICULTURE 
Figure 98.—Characteristic nest of Vetralopha asperatella, 
through most of the eastern part of the United States, and occasionally 
attracts attention locally. The larvae feed on sycamore. 
amity PHYCITIDAE 
The family Phycitidae contains many species of prime economic 
importance. It isa difficult group to classify because of the instability 
