CHAP. XIII. FAMILIES OF LEPIDOPTERA. 



77 



live within the stems or roots of plants; they become pupse 

 within their burrows. The Peach-tree Moth and Borer (Figs. 

 199 and 200), and the Raspberry-root Borer (Fig. 201), are 

 examples of this Family. 



Fig. 199. 



Fig. 201. 



Fig. 200. 



WOOD-NYMPHS (Zygsenidse). In these insects the head is 

 not sunken into the thorax, the palpi are slender, the wings 

 are quite long and narrow, and the thorax is not tufted. The 

 ground color is usually black or white. 



The larvae are provided with sixteen legs, and are commonly 

 naked, but are sometimes more or less covered with hairs. 



Fig. 202. 



Some kinds spin cocoons when about to change to pupae, but 

 the greater number enter the earth, or burrow into soft wood, 

 and form cells in which to undergo their transformations. 



