134 



INSECTS AFFECTING SHADE TREES. 



at once begin eating the foliage about them. They 

 continue to devour it for six or seven weeks, when 

 they become full-grown. They are then very hand- 

 some (Fig. 65) and measure a little over an inch. 

 The general color is bright yellow. The head and 

 two tubercle-like projections on the hinder portion 

 of the back are of a bright, coral-red. There are four 

 cream-colored tufts of hair along the back. Two 

 long black plumes project forward from just behind 

 the sides of the head, and another projects back- 

 ward from the posterior end of the body. About the 

 middle of July the caterpillars spin thin, whitish co- 

 coons upon the rougher bark, and about a fortnight 



Fig. 66. White marked Tussock-moth: a, female moth on cocoon ; 6, young 

 larva hanging by thread ; c, female pupa ; d, male pupa : e, male moth. 



later come forth as moths. These lay eggs for a sec- 

 ond brood, which completes its transformations be- 

 fore winter sets in. The pupa of the female (Fig. 

 66, c) is larger than that of the male (d). The male 

 moth differs greatly from the female moth, the for- 

 mer being winged (Fig. 66, e), while the latter is 

 wingless (a). The female crawls upon the top of the 

 cocoon (a) as soon as she emerges from the pupa 



