Annual report of the Fruit Growers' Association of Ontario, 1904

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Identifier: annualreportoffr1904frui (find matches)
Title: Annual report of the Fruit Growers' Association of Ontario, 1904
Year: 1905 (1900s)
Authors: Fruit Growers' Association of Ontario
Subjects: Fruit Growers' Association of Ontario Fruit-culture Fruit-culture
Publisher: Ontario Dept. of Agriculture, (Warcick Bros.
Contributing Library: Brock University
Digitizing Sponsor: Brock University - University of Toronto Libraries

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ma gigantea, Walsh. I gave a minute des-cription of this species, both of the male and of the female, in the CanadianEntomologist, vol. xxvi., p. 122. The country naturalist, who takes the trouble to study the plant gallsand their inhabitants, finds many things to awaken his interest and to ex-cite his admiration. AN ELEMENTARY STUDY OF INSECTS. By Prof. W. Lochhead, Guelph. The late Prof. C. Y. Riley, of Washington, estimated the number ofkinds of insects on the earth at ten millions. Of this immense number only200,000 are known, yet these make up two-thirds of all the kinds of animalsknown. The question will naturally arise: In what way do insects differfrom other animals? Although they differ much among themselves, all in- 1904 ENTOMOLOGICAL SOCIETY. 97 socts are seen to have much in common when their structure is studied. Theyail have, when full grown, three pairs of jointed legs; their bodies are com-posed of rings, or segments, more or less closely joined together into three re-
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Fui. 17. Diagram of the underside of a Beetle (Harpalus Caliginosus) ;1A. Mandible ; B. Maxil-lary palpus; C. outer tub^ of Maxilla; D. inner tube of Maxilla; E. labial palpus; F.paraglossfe ; G. Ligula . jj. mentum ; I. antenna ; K. prosternun ; L. episternum of pro-thorax ; M. coxae ; N ^-rochanter ; O. femur; P. tibia; Q. tarsus; E.. claws (ungues) ;S. meeosternum ; T. j^etas^^^^^^^ ^- episternum of mesothorax ; V. espisternum cfmetathorax ; W. vent ^ g^gments ; X. epimeron of mesothorax ; Y. epipleuron.7 EN. 98 THE REPORT OF THE No. 1^ gions, head, thorax, and al)(ioni;^:a; Uiey breathe air; they have one pair offeelers, or antennae; and usually one or two pairs of wings. By these char-acters, insects are readily distinguished from true worms, or from spiders,certipedes, and cray-fish, their near relatives. The Head. The head bears the feelers or antennae, the eyes, and themouth-parts, and is concerned with the sensation of touch and the g&ttingof food. The feelers function as

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