Gelechiidae 



in the "First Missouri Report," the accompanying cut has been 

 taken. It shows a gall as it appears from the outside, and also a 

 section of a gall, revealing the home which the larva constructed 

 for itself in the enlargement of the stem. 



The moth is very common in many parts of the country, but 

 particularly in western Pennsylvania. 



Genus ANARSIA Zeller 

 (i) Anarsia lineatella Zeller. (The Peach-twig Borer.) 



Syn. pruniella Clemens. 



The insect which we are considering was in all probability intro- 

 duced into California, where it is now most firmly established, from 



Asia, probably from Japan. 

 The eggs are deposited at 

 the point where the leaves 

 are attached to the stems, 

 or where the stem of the 

 fruit is located. The larvae 

 make minute burrows un- 

 der the bark of the twigs 

 and into the stem of the 

 fruit, and thus cause dam- 

 age both to the trees and to 

 the peaches. The insect is 

 double-brooded. The larvae 



FIG. 245. A. lineatella. a, new shoot 

 of peach withering from attack of larva ; b, 



larva, enlarged; c, pupa, enlarged. (After 

 Marlatt, "Bull. U. S. Dept. Agric.," New 

 Ser., No. 10, p. u.) 



are secretive, and hide so 

 effectually that it is said to 



be very difficult to detect 

 them. The insect remains 

 in the pupal state about ten 



days, when the moth emerges. The imago is about half an inch 

 in expanse of wing. The fore wings are of a beautiful gray 

 color, clouded on the costa with darker markings. The insects 

 of the second generation hibernate as larvas in their burrows in 

 the bark of the twigs. 



A very full and excellent account of the habits of this 

 insect has been published in the " Bulletin of the United 

 States Department of Agriculture " by Mr. C. L. Marlatt. It is 



426 



