INSECTS INJURIOUS TO THE CHESTNUT. 93 
7. THE UNADORNED TREE-HOPPER. 
Smilia inornata Say. 
A tree-hopper of the same size and shape as the preceding, but of a light green color 
fading to light yellow, with a slender black line along the upper edge of its back, and 
a very slight duskiness on the tips of its glassy wings. Common on chestnuts and 
oaks from July to the last of September. (Fitch.) 
8. THE CHESTNUT GAY-LOUSE, 
Callipterus castanee Fitch. 
Order HEMIPTERA; family APHID. 
On the under sides of the leaves, puncturing them and sucking their juices in August 
and September, a small sulphur-yellow plant-louse, with black shanks and feet, its 
antenne also black except at their bases and as long as the body, its wings pellucid, 
their first and second oblique veins and the tip of the rib-vein edged with coal-black, 
and its thighs straw yellow. Length, 0.09; expanse of wings, 0.15 inch. (Fitch.) 
9, THE CHESTNUT PHYLLOXERA. 
Phylloxera castanee (Ha: mi 
In August and September, on both sides of the leaves, puncturing them and extract- 
ing their juices and causing them to curl, a very small louse-like fly of a bright sulphur- 
yellow color, with a black thorax, breast, and eyes, its feet and antenne tinged with 
blackish and its wings translucent. The wingless individuals associated with it are 
entirely yellow, with red eyes. (Haldeman.) 
AFFECTING THE FRUIT. 7 
10. THE CHESTNUT WEEVIL. 
Balaninus caryatrypes (Boheman). 
Eating large cavities in the meat of the chestnut; a soft, white, footless grub, attain- 
ing its full size when chestnuts are ripe, and remaining in the nuts through the winter ; 
transforming into a weevil with an exceedingly long and slender beak. 
The chestnut is often infested by a large white maggot (Fig. 10, larva 
of Balaninus and chestnut infested), with a yellowish head, which 
attains its full size at the time the nuts drop. It is found in nuts sent 
Fic. 41.—Chestnut Maggot. a, a second, better drawn, view; b, head.—From Packard. 
to market, and it is probable that while some of the maggots gnaw their 
way out, and enter the ground in the autumn to transform, others delay 
until the spring. The worm devours nearly a third or one-half of the 
interior of the nut, part of the cavity being filled with the castings of 
