208 INSECTS INJURIOUS TO FOREST AND SHADE TREES, 
of cold late in September prevents those of the second brood from giving _ 
the finishing characteristic touches to their tubular domiciles. 
The larva is .30 inch long, pale green, a little paler than the pine 
leaves; darker over the region of the digestive canal. Body with 
minute warts of the same color as the body, from which arise short, 
slender, pale hairs. Head pale horn color, with a darker somewhat red- 
dish patch on each side of the head; on the clypeus just behind the 
labrum a triangular spot; labrum reddish horn color. It is very active, 
climbing out of its tube and letting itself down by a thread when dis- 
turbed. The worms found at the end of September were about fully 
grown. There must be two broods of worms, as the dead chrysalids 
were found in some of the tubes. When about to pupate the worm 
spins a slight web within its tube. One larva pupated in confinement 
September 21. Mr. Emerton informs us that he raised the moth, which 
we failed to do, but the specimen was unfortunately lost. 
We have found the young larve one-quarter grown on the white pine 
at Brunswick, Me., in August. They had not cut off the ends, but had 
merely drawn the leaves together with silken threads. 
89. THE PINE LEAF MINER. 
Gelechia pinifoliella Chambers. 
Order LepmporTera ; family TINEID®. 
Mining the leaves of different species of pine, a minute, brown, narrow, cylindrical 
larva. 
‘‘For several years the leaves of the common pitch-pine (Pinus rigida) 
in the vicinity of Itha- 
ca, N. Y., have been 
seen to be extensively 
/ mined by the larvee of 
' a Tineid, the life his- 
tory of which we have 
first studied the pres- 
ent season. The end 
of the leaf, and in 
many cases the entire 
leaf above its base, 
becomes dead and 
brown, and when 
opened it is found to 
be entirely eaten out, 
and to contain, in the 
proper season, the lar- 
va or pupa of the 
Fic. 86.—The Pine-leaf miner, larva, pupa, adult, and work.—A fter above-mentioned in- 
Comstock. sect. 
‘* What are in all probability the eggs of this insect have been found 
deposited singly near the base of the leaves. They are nearly round, 
