500 



pairs of brown thoracic legs, and five pairs of abdominal prolcgs. 

 When ready to pupate the larva comes near the surface of the 

 soil and there makes a tough cocoon an inch or so long, composed 

 of earth and excrement and lined with silk, and in it transforms 



FIG. 359. Grapevine root-borers at work. Five borers were feeding in this 

 section when taken from the ground two-thirds natural size. (Photo 

 by W. E. Rumsey.) 



to a brown pupa with yellow bands around the abdomen. In 

 about four or five weeks the pupa wriggles half way out of the 

 cocoon and the moth emerges, leaving the empty pupal skin 

 projecting above the surface of the ground. The moths emerge 



