developed male caterpillars, and the chrysalids of the females 

 are also much larger. (Fig. 2, c.) 



About a fortnight after the caterpillars pupate they again 

 transform and emerge as moths. The two sexes of these differ 

 greatly : the males (Fig. ze) have wings, well developed feathery 

 antennae, and the front legs thickly furnished with hair. " The 

 general color is ashy-gray, the front wings being crossed by un- 

 dulated bands of darker shade, with two black markings on the 

 outer edge near the tip, and a white spot on the inner edge, 

 also near the tip. He may frequently be seen sitting on the 

 trunks of trees, or on the shady side of houses, etc., as he rests 

 during, the day, and flies only after dusk, often being attracted 

 by light The female (Fig. 2a) is totally different from the 



Fig. 2 — White-marked Tussock-moth: a, female moth on cocoon; b, young larva 

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



male in appearance and resembles a hairy worm rather than a 

 moth, since she possesses the merest rudiments of wings. She 

 is of a pale gray color, the antennae being short and not 

 feathered, the legs rather slender and not covered with long 

 hairs." {Riley.) In consequence of her wingless condition 

 the female cannot fly ; after emerging from the chrysalis she 

 crawls upon the top of the cocoon where, after mating with the 

 male, she deposits her eggs in a single mass, and soon after 

 dies. 



NUMBER OF BROODS 



In New England as a rule there appears to be but one brood 

 a year of the Tussock-moth Caterpillars. These mature about 

 mid-summer, spin cocoons and become moths late in July or 

 early in August. The eggs are at once deposited, to remain 

 unhatched until the following spring. Further south there are 

 two broods. 



