File:Insects and insecticides. A practical manual concerning noxious insects and the methods of preventing their injuries (1891) (14797669773).jpg

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Identifier: insectsinsectici02weed (find matches)
Title: Insects and insecticides. A practical manual concerning noxious insects and the methods of preventing their injuries
Year: 1891 (1890s)
Authors: Weed, Clarence Moores, 1864-1947
Subjects: Insects, Injurious and beneficial Insecticides
Publisher: Hanover, N.H., Published by the author
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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ecmently be examined to seethat museum pests—insects which live on dead ani-mal tissues of all kinds—do not destroy them.When these are found, bake the specimens in an ovenfor an hour, at a temperature of 140° Fahrenheit. Moths, butterflies, bees, wasps, and a large numberof similar insects should be pinned through the cen-ter of the thorax, or middle division of the body, thepin being pushed through until about one-third ofits length remains above the insect. Beetles, how-ever, should be pinned through the right wing cov-er, and the true bugs through the triangular piece atthe base of the wings, called the scutellum. Any one desiring to learn about the classificationof insects will find the Introduction to Entomology,by Professor J. H. Comstock, Ithaca, New York, ex-tremely valuable. Professor Packards books En-tomology for Beginners, and Guide to the Studyof Insects, which can be obtained through book-dealers, will also prove helpful. PART I. INSECTSAFFECTING THE LARGER FRUITS.
Text Appearing After Image:
PLATE II.—A Group of Aegerian Moths, (magnified.) INSECTS AFFECTING THE APPLE. INJURING THE TRUNK. The Round-headed Apple-tree Borer. Saperda Candida. The three later stages of this insect are shown atFig. 9. The beetle (c) is easily recognized by thebrown color of its body, and the two conspicuous,longitudinal, whitish stripes along its back. It ap-pears early in summer, and deposits its eggs on thetree-trunks, in or under the bark, within a few inchesof the ground, frequently placing them just abovethe soil surface, or even below it where the ground iscracked open so that the beetle can descend withoutdifficulty. The insect makes a slit-like opening inthe bark, into which the egg is pushed. A few dayslater the egg hatches into a larva or grub, whichgnaws its way into the inner bark or sap-wood,where it continues to feed throughout the season.As winter approaches it frequently burrows downwardbelow the surface of the ground, and rests there untilspring, when it again works upward a

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  • bookid:insectsinsectici02weed
  • bookyear:1891
  • bookdecade:1890
  • bookcentury:1800
  • bookauthor:Weed__Clarence_Moores__1864_1947
  • booksubject:Insects__Injurious_and_beneficial
  • booksubject:Insecticides
  • bookpublisher:Hanover__N_H___Published_by_the_author
  • bookcontributor:The_Library_of_Congress
  • booksponsor:The_Library_of_Congress
  • bookleafnumber:35
  • bookcollection:library_of_congress
  • bookcollection:biodiversity
  • bookcollection:fedlink
  • BHL Collection
  • BHL Consortium
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