THE KANSAS PEACH. 



71 



material received at this office, we have been enabled to make a care- 

 ful study of the hibernating galleries or chambers of the young larva^. 

 These occur not only in the crotches of the smaller and sometimes 

 quite large branches, but many of the larv?e utilize the roughened 

 bark at any point. They burrow into the bark for a short distanci', 

 penetrating little more than the upper superficial layer, and form 

 slightly elongated chambers (fig. 13, c), which are lined with white silk 

 and the opening afterwards closed. The location of the larvi© may be 

 readily recognized by the little masses of jjrojecting excrement or 

 comminuted bark at the entrances to the burrows. Fig. 13, a, h. The 

 size of the burrow and the fact of its being lined with silk preclude 

 the idea that the larva feeds in the fall or during hibernation, except, 

 perhaps, in the mere operation of excavating the chamber. 



Fig. 13. — Anarsin UnP'ite!!a:a, twigof peach, 

 showing in crotch minute masses of chewed 

 bark above larval chambers ; h. latter much 

 enlarged ; r, a larval cell, with contained 

 larva, much enlarged ; d, dorsal view of 

 young larva more enlarged (original). 



Fig. 14. — Anarxia lineatelki : a, new shoot of 

 peach withering from attack of larva ; b, 

 larva enlarged ; e, pupa enlarged ; d, tip of 

 pupa more enlarged (original). 



The young larva, as taken from the burrow, is not above two milli- 

 meters long, and is of a general yellow color, with the head and cer- 

 vical and anal plates dark brown, almost black. Fig. 13, d. 



While in their winter quarters the larv?e are subject to the attacks 

 of predaceous mites, and many of them are destroyed by this means, 

 as will be later noted. They are also occasionally parasitized by a 

 chalcidid fly. 



Early in April the larvae begin to abandon their hibernating quar- 

 ters and attack the new leaf shoots, but some individuals were found 

 in the crotches by Mr. Ehrhorn as late as April 21. The damage 

 becomes noticeable, as a rule, at the time the shoots are from one-half 

 inch to two inches in length, or, more properly speaking, [when] 

 mere clusters of newly expanded leaves. 



Glover's account of their working downward in the old twigs from 



