Head red white-marked tussock moth (fig. M)^2 



Head not red 1 



Working in late spring and early summer gypsy moth (p. 47). 



Working in late July and early August Datana drexelii Hy. Edw.^^. 



Working in late August and in September 



crinkled flannel moth (figs. N and O)'*'* 



WHITE-iMARKED TUSSOCK MOTH 

 Fig. M. Mature caterpillars. (From U. S. Dept. Agr. Farmers' Bui. 1270.) 



CRINKLED FLANNEL MOTH 

 Fig. N. Young caterpillars. Somewhat enlarged. 

 Fig. O. Mature caterpillar. Somewhat enlarged. 



^ Hcmerocampa leucostigma (S. & A.). A beautiful caterpillar sometimes rather 

 abundant on dry bogs but never very harmful. 



^ These worms sometimes defoliate small patches of vines but never do great harm. 



■" Lagoa crispata Packard. Flattened, slug-like caterpillars covered with a thick coat 

 of hair at first white and finally brown. They feed freely on cranberry foliage but are 

 never seriously abundant on bogs, appearing there only occasionally and on small areas. 



[46] 



