Economic entomology for the farmer Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . economicentomolo00smit Year: 1906 rarely very numerous, and may be kept in check as recom- mended on a previous page for the Cucujidce. There are other small families in the clavicorn scries, some of them interesting enough to the entomologist, but none of im- portance economically Fig. 163. or likely to attract the attention of the cas- ({\ \ ^PH '^1. J^reJV if ''Vi T' '^ ^^^ observer; hence Câ) iX ^^; I SK'.-'U T -U r 1 hardly subject
Economic entomology for the farmer Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . economicentomolo00smit Year: 1906 rarely very numerous, and may be kept in check as recom- mended on a previous page for the Cucujidce. There are other small families in the clavicorn scries, some of them interesting enough to the entomologist, but none of im- portance economically Fig. 163. or likely to attract the attention of the cas- ({\ \ ^PH '^1. J^reJV if ''Vi T' '^ ^^^ observer; hence Câ) iX ^^; I SK'.-'U T -U r 1 hardly subjects for de- scription here. The Serricoryiia, or '' saw-horned'' series, begins with the family Dascyllidce, contain ing mostly small forms found on dead or dy- ing trees or branches, in which the larvae probably live. None are of economic im- portance, a fact which is also true of the next family, Rhipiccrida;. This latter, indeed, contains only five species, all accounted rarities in collections, and believed to breed in cedars. The family Elateridce, ' spring-beetles,' 'click-beetles,' or ' snapping-beetles,' contains numerous troublesome forms, and is easily distinguishable in all its stages. The beetles have the prothorax very loosely jointed to the rest of the body, and on the under side a curved Fk;. 164. c^ â ^ j)rocess fits mto a cavity of the meso-thorax. When a specimen is placed on its back it bends the extremities so as to raise the middle of Jenfbtioides corticalis, the 'cadelle.'âa, larva; b adult; c toj, structural details. An I''later from side, to show the prosteriial process. the body from the surface, and to bring the tip of the curved process to the edge of the cavity. A sudden release of muscular tension reverses matters, sends the insect into the air a few inches, and this 'snapping' or jumping performance is repeated until it alights on its feet. In the larval stage the term ' wire-worms' expresses the appearance and texture of the creature, and brin
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