Guide to the study of insects and a treatise on those injurious and beneficial to crops, for the use of colleges, farm-schools, and agriculturists . , andby many recent authors552. they have been widely separated from what seem to us their nearest allies. Latreille,however, recognized their affinities to the Homoptera, whilestating that in their free biting mouth-parts they resembledthe Orthoptera, to which Geoflroy referred them. To us theyappear to be, as it were, degraded Lygaeids, and to preservethe general form of that group, in the long head, the stout,thickened fore limbs, and the large
Guide to the study of insects and a treatise on those injurious and beneficial to crops, for the use of colleges, farm-schools, and agriculturists . , andby many recent authors552. they have been widely separated from what seem to us their nearest allies. Latreille,however, recognized their affinities to the Homoptera, whilestating that in their free biting mouth-parts they resembledthe Orthoptera, to which Geoflroy referred them. To us theyappear to be, as it were, degraded Lygaeids, and to preservethe general form of that group, in the long head, the stout,thickened fore limbs, and the large, square prothorax. Theyhave both compound and simple eyes, the latter three innumber. The antennoe are long and slender, with from five to ninejoints. In some species the fore wings are comparativelywell developed, or, as Haliday states, they are transformedinto broadish elytra, ciliated only behind, and with longitudinaland transverse nerves. In some species the wings are want-ing, at least in the males. (Westwood.) The abdomen is. THRIPID^. 549 terminated in the male b}^ a long attenuated joint, by a four-valved borer in the female. The eggs of Phlaiothrips have been compared to those ofCulex, by Haliday, being cylindric, rounded at one end, andcrowned with a knob at the other. Both the larva(Fig. 554) and pupa are active, being found in thesame situations as the adult. The larvae are of softerconsistence, pale, or reddish, and the thoracic rings aresimilar to each other, while in the pupa the articula-tions of the limbs are obscuied by a film, anc^. the wingsenclosed in short fixed sheaths. The antennae are ^^•^*-turned back on the head, and the insect, though it movesabout, is much more sluggish than in the other states. (Plali-day in Westwoods Introduction, etc.) The different species occur under the bark of trees, and arevery injurious to grain and flowers, eating holes in the leavesor corollas, and sucking the sap from the flowers of wheat, inthe bottom of which they
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectinsects
