HILL FIREWORM 

 Fig. A. Egg5. Enlarged. 

 Fig. B. Mature worm. J 



Fig. €. Cocaoii. ( ^n somewhat enlarged. 



Fid. D. Pupa. f 



Fig. E. Moth. ) 



Fig. F. Work of Worms, their tubes and frass. 



stems of the new cranberry growth. They are oblong-oval and yellow or reddish 

 at first, the largest being very nearly a millimeter long. They become bright 

 crimson within a day and a half and remain so up to within half a day of their 

 hatching. Their usual incubation period is five to six days. 



THE WORM 



The worms (fig. B) work in June and July and till the middle of August. They 

 have blackish heads and reddish bodies when newly hatched. As they grow larger, 

 the head is black; the cervical shield with a much'broken palcyellow stripe 

 along its front margin; the body dark brown, marked lengthwise on the back and 

 sides, except toward the hind end, with about eight narrow and broken pale-yellow 

 stripes, these being most conspicuous toward the head end; the venter without 

 stripes; the back and sides with noticeable scattered pale hairs. The full-grown 

 worm is from five-eighths to thirteenth-sixteenths of an inch long 



Most of these worms mature and many pupate by August 1. All of them pupate 

 before August 25. They envelop themselves in a cocoon of silk and sand (fig. C), 

 generally on the bog floor, and soon pupate in it. 



[18] 



