Fig. 20. 



SPOTTED FIREWORM 



Cranberry uprights with tips webbed by young worms. 



THE PUPA 



The ptipa (fig. D) is slender and about two-fifths of an inch long. Its head 

 end and wing covers are dark oHve green. The abdomen is mostly chestnut brown, 

 the caudal segment being dark brown and having a small hook on each side of 

 the apex, recurved ventrad. 



THE MOTH 



The moths (fig. E) emerge from about August 8 till about September 5; but 

 some of the pupae live through the winter, their moths coming out very late in 

 May and during the first half of June and being somewhat larger than the others. 



These moths hide cleverly among the cranberry vines and in the litter under 

 them, but are strong and quick in flight when flushed. They are six to seven 

 sixteenths of an inch long to their wing tips and have a wing expanse of twelve 

 to fifteen sixteenths of an inch. Their further description is as follows: 

 Forewings dark gray above, with cross tufts of black or black-tipped erect 

 scales near the base, about a third of the length from the base and somewhat 

 beyond the middle of each; uniformly smoky below; hindwings pale with smoky 

 front and outer margins; head (except eyes), palpi, and basal parts of antennae 

 dark gray; thorax dark gray above, light gray below; legs dark gray; dorsum of 

 abdomen dark gray with fringes of pale yellow along the hind margins of the middle 

 segments; venter colored similarly but with pale marginal hind fringes on all the 

 segments. 



Treatment 



Cryolite, 50 pounds to the acre, applied as a dust whenever the worms are 

 prevalent, gives excellent control. Bog flooding has not proved practicable. 



Spotted Fireworm i"^ 



This fireworm is considerably harmful only occasionally and on rather small 

 bogs. It seldom infests bogs that are reflooded regularly. It works like the 



" Archips parallela (Rob.). 



[19} 



