468 FRUIT INSECTS 



yellowish-brown eggs in the edges of the leaves of certain grasses 

 growing in the bogs or on the dikes and dams. Deer grass 

 {Panicum dichotomum) and double-seeded millet (P. viscidum) 

 are preferred for oviposition. There is only one brood a year, 

 the winter being passed in the egg-stage. The younger katy- 

 did nymphs do not attack the berries. The berry-feeding habit 

 does not develop until they reach the last nymphal stage. 



The number of katydids can be greatly decreased by keeping 

 the bogs free from the grasses in which they lay their eggs. 

 On the dams where it is desirable that the grasses be allowed 

 to grow in order to protect the banks, the tops containing the 

 eggs may be burned off with a gasoline torch in the fall. 



Various species of long-horned or meadow grasshoppers are 

 usually abundant in cranberry bogs. They, too, are fond of 

 cranberry seeds and aid the katydids in their destructive work. 

 Their ravages may be prevented by keeping the bogs free from 

 grass ; clean bogs are rarely subject to attack, 



Reference 

 U. S. Farm. Bull. 178, pp. 26-30. 1903. 



The Cranberry Girdler 

 Cramhus hortnellus Hiibner 



In cranberry bogs along the Atlantic coast spots of consider- 

 able size are sometimes seen where the vines have been killed 

 and have turned brown as if scorched by fire. The cause of 

 the trouble is a sooty grayish caterpillar, about five eighths 

 of an inch in length when mature, that lives in a flimsy silken 

 tube at or just below the surface of the sand and feeds on the 

 bark of the prostrate stems of the vines. 



The parent moth (Fig. 391) has an expanse of about | inch; 

 the front wings are pale straw color marked with bands of yel- 

 low and silver towards the apex. The wings are folded closely 



