CRANBEKKV INSECT PROBLEMS. 



31 



Fig. 27. — Cranberry girdler : Larva. Much enlarged. 



pupa^ will be found in the coccons early in June and moths will be 

 ; emerging in large numbers about June 15. The adult (fig. 26) meas- 

 ■ ures about three-fifths of an inch in maximum wing expanse. Flying 

 about the bog it has a whitish appearance, but in reality' the ground 

 color of the forewings is pale straw^, bearing touches of brown, silver, 

 and black, Avith a fringe of silver. The hind wings are silvery gray. 



ONE GENER.XTION ONLY. 



Moths nvcxy be seen flying on the bogs from May until August, and 

 it has been thought by many persons that at least two generations 

 occur in a season. This, however, is not the case, there being oidy one 

 , brood of worms a year. On dry bogs the moths may be expected to 

 I emerge in May and June, and in some spots on flowed bogs wdiere the 

 vine growth is especially heavy, and Avhere, perhaps, the water has 

 been slow in draining, emergence of moths will not take place until 

 July. These late-emerging moths may fly for several Aveeks and thus 

 give the appearance of a second brood. The moths are prolific laj^ers, 

 dropping their eggs on the trash beneath the vines. 



The eggs are white at first, becoming pink and then red as hatching 

 approaches; they are oval in outline and slightly flattened at the 

 poles, with ribs running vertically from pole to pole. Owing to their 

 minute size, it is practically impossible to find them on the trash. 



THE I.AKVA. 



The newly hatched larva is an active, hairy specimen and almost 

 never is encountered owing to its minuteness, dirty color, and the 

 liict that it works in the fallen leaves beneath the vines, where the 

 linding of a full-grown Avorm is indeed difficult. P^ai-ly feeding seems 

 to be of little importance, but in August and September the worms 

 ni-e ravenuous feeders, consuming large amounts of bark and wood. 



