Report of the State Entomologist on Injurious and Other Insects of the State of New YorkUniversity of the State of New York, 1911 |
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abdominal segments abundant adipose tissue adult Albany antennae aphid appears application arsenate of lead August bark body segments bordeaux mixture borer caterpillars Cecidomyiidae cells check trees chitinous Cicadas CLEAN FRUIT WORMY cocoon codling moth colony Country Gentleman Department of Agriculture eggs elm leaf beetle embryo end and side end wormy Entomologist Exit Exit Fabr female foliage FRUIT WORMY FRUIT fuscous Gall Midges Geology gipsy moth green hole hole Hudson valley injury insect July June Kieff latter length lime-sulfur wash Linn mesodermal Miastor mother larva Museum nearly observed occur ocular spot orchard pedogenesis percentage of sound pest Picked fruit pine plate plot portion Psylla pupa quadrangle recorded reddish Rep't reported sawfly scurfy scale season Sept showing side wormy Sondrio sound fruit species specimens spraying submedian TOTAL FRUIT vicinity whitish wing worm wormy apples wormy side wormy York young ΙΟ
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Seite 65 - It also occurs on several other food plants. Life history. The beetles evidently winter' in any sheltered place, and in the vicinity of Washington, at least, make their appearance as soon as the leaves of the locust trees have fully developed. At this time they eat small, oblong holes in the leaves, and later in the season skeletonize the upper surface. The eggs are laid on the under side of the leaves and are partly covered with an excrementaceous secretion. They hatch in about six to eight days,...
Seite 68 - The larva, when full-grown, which is generally during the month of July, is about one-fifth of an inch long, oblong in form, rather broader before than behind, flattened, soft, and of a yellowish-white color, with the head and neck blackish and of a horny consistence. Each of the three anterior segments has a pair of legs ; the other segments are provided with small fleshy warts at the sides, and transverse rows of little rasp-like points above and beneath. "The larva changes to a pupa within the...
Seite 5 - EDUCATION DEPARTMENT Regents of the University With years when terms expire 1913 WHITELAW REID MA LL.D.
Seite 83 - ... nourishment is absorbed by osmosis after escaping from the mother larva, as well as before. It would appear as though the several types of larvae occurring in a colony are possibly only .modifications, due to the relative amount of nourishment obtained by the individual. Normally, reproduction by pedogenesis occurs throughout the warm months of the year and even into late fall, and commences in early spring, the cold weather of winter simply causing a suspension of activities. Dr Kahle, after...
Seite 104 - The fore wings are dark brown on the inner, and grayish on the outer margin, with a dot near the middle, a spot near each angle, and several longitudinal streaks along the hind margin, all dark brown. The...
Seite 84 - ... after an extended series of observations, was led to believe that asexual multiplication might continue uninterruptedly for possibly a period of two or three years. This appears reasonable, since somewhat recent experiments by Slingerland have shown that a plant louse might produce nearly 100 asexual generations in almost four years and presumably was capable of continuing this much longer. The adults of Miastor and Oligarces occur in midsummer, a season when the midges of most of these forms...
Seite 5 - ... species through the courtesy of Dr LO Howard, chief of the bureau of entomology, United States Department of Agriculture, and his associates.
Seite 48 - ... of an inch in diameter, and there are usually 400 to 500 eggs in a cluster, though occasionally 1000 may be found in an egg mass. "The young caterpillar is slightly over one-tenth of an inch long just after it emerges from the egg. It has a black head, the body is brownish yellow and well clothed with long hairs. There is a prominent hairy tubercle on either side of the segment next the head; this gives the caterpillar a peculiar broad-headed appearance, especially in its early stages.
Seite 82 - They exhibit a manifest tendency to occur in segregated masses, frequently between loose flakes of bark or in rather broad crevices. These colonies contain in autumn old empty skins of mother larvae ; a number of yellowish mother larvae with approximately five to fifteen young within ; very numerous, small, yellowish larvae showing no trace of embryos ; a number of white, various sized active larvae, frequently white, sometimes semitransparent ; and a few quiescent white larvae containing young embryos....