. Marvels of insect life [microform] : a popular account of structure and habit. Insects; Insectes. 158 Marvels of Insect Pkaluby] [H. BastiH. BUG. A iiUiit LiiK ..I niiMrkabl.' .Umhii ttorci South Aimrira. Hir « jiml sk-mlii hiuH km hank into pitttily-â¢loimf1 kallikv urowtn^ wlikh tmd to ii. - â - '"' e nature when se-n upon fohage. the bugs have their mouth- parts designed not for cuttini; sohds, b'lt solely for imbibim: fluidsâthe sap of plants or tlif blood of animals. This beak consists of a long, jointed sheath, gr-ioved olong its inmr f
. Marvels of insect life [microform] : a popular account of structure and habit. Insects; Insectes. 158 Marvels of Insect Pkaluby] [H. BastiH. BUG. A iiUiit LiiK ..I niiMrkabl.' .Umhii ttorci South Aimrira. Hir « jiml sk-mlii hiuH km hank into pitttily-â¢loimf1 kallikv urowtn^ wlikh tmd to ii. - â - '"' e nature when se-n upon fohage. the bugs have their mouth- parts designed not for cuttini; sohds, b'lt solely for imbibim: fluidsâthe sap of plants or tlif blood of animals. This beak consists of a long, jointed sheath, gr-ioved olong its inmr face, and 'iielieved to be coin- posed ot the mf^ditied upptr and lower lijis. When not in iim' it folds out of the way by lyini: close against the under side of the body. Within this grooved sheath lie four line bristles which can be lengthened or shortened. Two of tliese tour bristles are barbed at the point. In some species the sheath appears to make an incision in the skin of the animal victim, but in most eases, at least ol the plant-suckers, its tip is believed to be merely brought in contact with t''' â i[)ot to be tapped and then trie bristles penetrate the surface. The secretion of the salivary giaiids is then passed down the sheath. which has the effect of thinning the fluid to be imbibe^d by the Insect, and so redm-ed it mounts by capillarv attraction between the bristles to the dosi'd mouth. his appears to be the method by which the diverse forms of bugs obtain their nourishment. .. , The bugs are nominally all four-winged Insects, but, as in other families, , are species in which for reasons connected with their habits the wings are not devel ,i)ed. .\ccording to the character of the wings the bugs have been into two sub-orders. In the first of these, or true bugs,' the front pair differ Irtini the hind pair in having the basal half of their area of a thicker, more horny than the apical half. When the wings are closed at rest these thi
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1915
