472 ECONOMIC ZOOLOGY AND ENTOMOLOGY 



STRAWBERRIES 



The Strawberry Crown-borer (Tyloderma fragaria;}. The 

 white grub-like larvae of this beetle often cause the death of 

 many plants by boring into the crown and eating out a large 

 cavity. The dark-colored adult is about one-fifth of an inch 

 long, and belongs to the group of snout beetles, having the head 

 produced into a conspicuous blunt snout. The beetles pass the 



FIG. 225. Larvae of strawberry crown-moth, Sesia rut Hans, in crown of 

 strawberry plant. (Somewhat reduced.) 



winter in the soil, emerging in the spring to lay their eggs on 

 the plants. All dead or weakened plants should be dug out and 

 destroyed as soon as noticed. As soon as a bed becomes 

 badly infested it should be plowed up and a new one planted 

 elsewhere, care being taken to use young plants that contain 

 no eggs or larvae of this pest. As the beetles cannot fly the new 

 bed will not be readily infested. 



