Tineidae 
Genus BUCCULATRIX Zeller 
(1) Bucculatrix canadensisella Chambers. (The Birch- 
leaf 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 
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; cw'vilineatella 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- 
431 
Fig. 250. — B. 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; 
:, moth. All figures magnified. (After Pack¬ 
ed, “Insect Life,” Vol. V, p. 14.) 
