RHYNCOPHORA 



203 



The insect hibernates as an adult and may be carried by 

 shipments of cotton seed or other objects. The eggs are 

 laid on cotton bolls in early summer and the larvas feed 

 within the bolls, ruining the fibers that would form the 

 crop. 



Fig. 157.— Dcndroctor, 



v(tU:iis: adult. (A, 

 U. S. Dept. Ag.) 



D. Hopkins. Bur. Ent. 



Diversified farming, the clearing up and burning of old 

 cotton plants in the fall and early planting are some of the 

 measures used in efforts to control the species. 



The white-pine weevil is a destructive species in the pine 

 forests of the Northern States and Canada and occurs south- 

 ward along the Allegheny range to North Carolina. 



Scolytidse or Engraver Beetles and Bark Beetles. ^These 

 are interesting because of their forming characteristic mark- 



