BOMBYCIDS, 119 
may often be seen hanging to the stems and leaves of the oak in 
September. This is the larva of Edema albifrons and is sometimes 
Larva of Edema albifrons. 
abundant enough to do considerable damage to the trees. When not 
feeding, and especially if disturbed, the caterpillars bend the head 
Edema albifrons. 
and rear end of the body over the back. The perfect insect has 
brown upper wings with a whitish band along the upper margin, and 
heht yellowish-brown lower wings. 
Gi ii :\\ 
Ceelodasys unicornis. Coelodasys biguttata. 
A curiously humped caterpillar is the larva of Colodasys, of 
which we have several species. ~ Celodasys unicornis is buff-gray, 
Larva of Coelodasys. 
gray with brown 
c 
with darker markings, and Celodasys biguttata is 
markings and light brown hind wings. 
