File:The entomologist's text book - an introduction to the natural history, structure, physiology and classification of insects, including the Crustacea and Arachnida (1838) (14802464563).jpg

Identifier: entomologiststex00westw (find matches)
Title: The entomologist's text book : an introduction to the natural history, structure, physiology and classification of insects, including the Crustacea and Arachnida
Year: 1838 (1830s)
Authors: Westwood, J. O. (John Obadiah), 1805-1893 Richardson, William Stevens, former owner. DSI
Subjects: Insects Crustacea Arachnida
Publisher: London : Wm. S. Orr and Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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ies.))Order Hymenoptera. Wings with large areas; * This term has been completely misapplied by English entomologists,having been originally proposed for the Cimicid^e. 1 have, therefore, em-ployed the term Euplexoptera in its stead for the earwig. t In most of his works, Latreille has separated the rostrated Hemi-ptera of Linnaeus into two orders—Hemiptera (Cimex, &c.), and Homo-ptera (Cicada, &c.), the characters of which are at least as important asthose which separate the earwig from the grasshoppers. 334 PTILOTA. the posterior smaller than the anterior; anexserted ovipositor or sting in females of themajority. (Bees, wasps, saw-flies, &c.)b. Mouth transformed into a spiral tongue; wingsfarinose. Order Lepidoptera. (Butterflies, moths.)B. Wings, two. Order Rhipiptera, Latr. (or more properlyStrepsiptera, Kirby.) Ilalteres, two, placedin front of the wings, which are folded longi-tudinally. Order Diptera. Halteres, two, placed behindthe wings. (Two-winged flies.) j2^rF
Text Appearing After Image:
rPrec^fAi/iM > (A^^f/ci ^e-tt.co-^tU 335 CHAPTER VI. ILLUSTRATIONS OF THE ORDERS OF PTILOTA. The first order, Coleoptera, is of very great extent, and isdistinguished by having the wings inclosed in a case, com-posed of a pair of scaly pieces, meeting along the back in astraight line. The wings themselves are of large size, andof a membranaceous texture, and when unemployed are shutup in several transverse folds, the first of which occurs be-yond the middle. These scales are termed elytra, and,shutting upon the back, they conceal the upper sm-face ofthe abdomen, as well as the wings, from view. The insectsthemselves are, for the most part, known by the name of beetles, although theterm is not exclusivelyapplied to them. Thusthe blister-fly (Can-tharis) is a coleopte-rous insect, as well asthe tm-nip-fly (Halticanemorum). On com-paring a butterfly witha cockchafer or dor, itwill be easy to perceivethat the latter is dis-tinguished by the fol-lowing character,— Wings two, memhranac

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