14 



a b c d 



Fig. 12. White-Marked Tussock-Moth. 



o, Female on cocoon; h, young caterpillar; c. female pupa; d, male pupa.— After Riley. 



On June 15. they commenced spinning their cocoons and the moths 

 emerged June 21. After mating, the females laid their eggs on the 

 old cocoon which they usually attach to a leaf adhering to a branch 

 of the tree. These eggs of the second generation hatched July 8, 

 passed their transformations, and pupated August 10. The moths 

 of this brood emerge'd August 23, and laid their eggs which remained 

 through the winter and hatched the next spring, thus giving two 

 generations a year in this State. Fig. 12, a, represents the cocoon 

 partially covered with the egg cluster upon which is represented the 

 wingless female moth ; 6, a young caterpiller suspended by a thread ; 

 e, a female pupa, and cZ, a male pupa. 



Fig. 18. White-Marked Tussock-Moth. 



Male.— After Riley. 



The male, Fig. 13, expands about an inch and a quarter, and is of 

 a dull ashy gray color with several wavy dark brown lines crossing 

 the fore wings which are whitish along the front edge with a small 

 black spot near the apex and a small white spot near the anal 

 angle. The antennae are heavily fringed. The females are lighter 

 gray than the males and have no wings, only the rudiments of them 

 being visible. The body is oval in outline and quite plump before 

 the eggs are laid, Fig. 12, a. 



