. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 44 Agricultural Experiment Station, Ithaoa, IST. Y. In 1891, we also had a similar experience to that recorded by Dr. Linter above. Larvae which hatched in the latter part of June, attained such a growth by July 20, that it seemi'd as if they must become full grown before fall. All had disappeared, however, by August 1, and were supposed to have died. Further observations were made upon this point in 1892. The eggs obtained from moths confined in cages h
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 44 Agricultural Experiment Station, Ithaoa, IST. Y. In 1891, we also had a similar experience to that recorded by Dr. Linter above. Larvae which hatched in the latter part of June, attained such a growth by July 20, that it seemi'd as if they must become full grown before fall. All had disappeared, however, by August 1, and were supposed to have died. Further observations were made upon this point in 1892. The eggs obtained from moths confined in cages hatched July 11; and the larvae were given every chance to grow in our cages and on trees in the field. These larvie had moulted the third time by July 28, after which they fed but very little. On August 2, one of the larvoe in the cage had left its tube and leaf. It was found in a minute, closely woven, silken case constructed in a slight groove by the larva in the bark of the twig; the bark presenting no angular places, the larva had cut one. The outside of the cocoon was completely covered with little particles of bark and dirt, thus rendering it a very inconspicuous object. These hibernacula are but little more than an eighth of an inch in length and just large enough to hold the somewhat contracted body of the little larva. They are always made ou the twigs and smaller branches, and usually quite near a bud. Figure 8 represents a twig natural size bearing three hibernacula at a and b. By the middle of August most. Fig. 8.— Twig showing the position of the winter homes of the larvae at o, a, and 6, natural size. of the larvje both in the cages and in the field had gone into hibernation. Frequentythe hibernacula were made under some convenient piece of dead leaf or bud scale {b, Fig. 9) which had haj)pened to lodge on the bark of the tree. The bit of leaf or scale would be firmly fastened to the branch by the silken case underneath Some of the larv:e which were of the same
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