. Annual report of the Cornell University Agricultural Experiment Station, Ithaca, Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). On Certain Seed-Infesting Chalcis-Flies, 371 puncture in the seed coat heals over so that when mature there is no indication as to how the larva came inside the seed. As the egg is at first pure white it is very difficult to find in the semi- fluid contents of the unripe seeds. One was found, however, in this position on June 23, 1908, thus proving conclusively that it is in this stage that the insect gains access to the s
. Annual report of the Cornell University Agricultural Experiment Station, Ithaca, Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). On Certain Seed-Infesting Chalcis-Flies, 371 puncture in the seed coat heals over so that when mature there is no indication as to how the larva came inside the seed. As the egg is at first pure white it is very difficult to find in the semi- fluid contents of the unripe seeds. One was found, however, in this position on June 23, 1908, thus proving conclusively that it is in this stage that the insect gains access to the seed. The young larva feeds on the soft kernel until September, when it has become full-grown and the kernel of the seed has been entirely devoured. It then becomes proportionally shorter and thicker, pre- paratory to its period of hibernation. The inner seed coat is not injured and surrounds the larva like a kind of delicate cocoon. Description of the Insect The egg.—One egg found in the kernel of a seed was white, unsculptured and measured .51 mm. long by .15 mm. wide. It is spindle-shaped, pointed at both ends and provided at one end with a long, tail-like process (Fig. 71). Larva.—The full-grown larva is grub-like in form with the head drawn under the body. It measures to millimeters in length,. Fig. 72.—Apple-seed Chalcis; front view of head of larva. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cornell University. Agricultural Experiment Station. [Ithaca, N. Y. ?], 1900-1910. James B. Lyon, State printer)
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