Tent Millers 



133 



line of silk they laid; doing this often makes the 

 well-marked silken trails. 



The moths lay their eggs on twigs, surround- 

 ing the twig with a cylindrical bunch of from 250 to 

 400 eggs, placed side by side in perfect rows 

 around the twig and varnished with a gummy mat- 



Apple tree denuded by tent caterpillara. 

 Note web on ground, trunk and branches. 



ter which is supplied by the female moths and 

 which waterproofs the eggs (Fig. 131). These 

 bunches of eggs may readily be detected in the 

 winter when the twigs are bare. 



As soon as the little caterpillars hatch in the 

 latter part of April and the first of May, they be- 



