792 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



vents those of the second brood from giving the finishing character- 

 istic touches to their tubular domiciles. 



Fig. 268. — Tubes of tbe pine tube-building leaf- roller; natural size. — After Packard. 



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 i)ale horn color, with a darker somewhat red- 

 dish patch on each side of tbe 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. In Providence two pujjated as late as the first or second 

 week in November. 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 larvae one-quarter grown on the white pine 

 at Brunswick, Me., in August. They had not cut ofl" the ends, but had 

 merely drawn the leaves together with silken threads. 



We also add Professor Comstock's account published in the TJ. S. 

 Agricultural Report for 1880, 



On the loth of October the Departmeiit received from Professor Gage, of Ithaca, 

 N. Y., a number of the tips of branches of white pine (Pinus strobus) which were in- 

 fested with the larvae of a species of Tortricid. From sis to ten of the terminal 

 leaves were drawn together lengthwise, forming a kind of tube, which was lined in- 

 side with delicate white silk. Sometimes the leaves of one fascicle were drawn 

 together, but more frequently those which were near each other from diflerent 

 fascicles. The tube is open at each end, the outer being cut off squarely or obliquely, 

 very often leaving two or more of tbe leaves untouched. 



This tube seems to serve as a protection to the larva, from which it comes out to 

 feed upon the ends of the very leaves of which the tube is composed. In this way 



