Tineidae 



Genus BUCCULATRIX Zeller 

 (i) Bucculatrix canadensisella Chambers. (The Birch- 



ieaf Bucculatrix.) 



This little insect in its larval stage is known to infest the 



leaves of the birch and the wild cherry. The caterpillars feed 



upon the parenchyma of 



the leaves, attacking both 



the upper and the lower 



sides, and completelyskel- 



etonizing them. Forests 



of birches in New England 



are known to have been 



completely stripped of liv- 

 ing tissue in the fall of the 



year, in such a manner as 



to suggest that a fire had 



passed over the trees. The 



larvae are sluggish in their 



movements, when dis- 

 turbed dropping down by 



a silken cord. The cocoons 



are white and ribbed, as 



represented in the annexed 



FlG. 250.^. canadensisella. , skeletonized 

 birch-leaf ; b, pseudo-cocoon ; c, larva ; d, head 

 of same ; e, anal segments of do. ;f, anal segment 

 of pupa; g, cocoon with extended pupal skin; 

 lined. (After Pack- 



h, moth. All figures mz 

 ard, "Insect Life, "Vol. 



p. 14.) 



figure. They turn dark 



after they have been spun 



up for some time. The 



insect is not uncommon 



in Rhode Island, and is 



known to occur throughout New England, northern New York, 



and Canada. It probably has even a wider range, and may be 



found in the mountains of Pennsylvania, where its food-plant is 



abundant. The best account of its habits has been given by 



Professor A. S. Packard in "Insect Life," Vol. V, p. 14. 



(2) Bucculatrix pomifoliella Clemens. (The Apple-leaf 

 Bucculatrix.) 



Syn. pomonella Packard ; curvilineatella Packard. 



The minute moth, a greatly enlarged figure of which is given 

 in the annexed cut, has the habit of denuding the leaves of apple- 



43' 



