. Insects affecting domestic animals [microform] : an account of the species of importance in North America, with mention of related forms occurring on other animals. Parasites; Insects, Injurious and beneficial; Animaux domestiques; Insectes nuisibles. HEMIPTERA. 173 I the skin, of long, aud fully half that in width, wliile tlie males are a little smaller and proportionately a little narrower. Aside from the difference in size sexes differ very decidedly in the markings and structural fea- tures upon the umler side of the body. The males have a broad black stripe running forward from the
. Insects affecting domestic animals [microform] : an account of the species of importance in North America, with mention of related forms occurring on other animals. Parasites; Insects, Injurious and beneficial; Animaux domestiques; Insectes nuisibles. HEMIPTERA. 173 I the skin, of long, aud fully half that in width, wliile tlie males are a little smaller and proportionately a little narrower. Aside from the difference in size sexes differ very decidedly in the markings and structural fea- tures upon the umler side of the body. The males have a broad black stripe running forward from the end of the body to near the middle of the abdomen, as shown in figure 100, c. The females have no indications of this stripe, but the black, broken bund of the U[)per side of the terminal segment extends slightly around on the under side. The most important character, however, is the i)re8ence of two little brush-like organs on the next to the last seg- ment, as shown in figure 100, d. The head is bluntly roumled in front, nearly as broad as long, and with the anteume sitiratcd at the sides midway from the posterior to the anterior borders; behind these are located slight eminences upon which may be found the small eyes, which are seen with considerable ditticulty. At the front of the head may be seen the small rostrum or beak, the. Fo. \W^.—TTti';!trriiiis: n, fi'inuli'; h, rostrum; r, vpiilrul surl'aitMtf tlio liist sppmonts of male; (/, sami) iil' I'omale; c, iij;^; .'', surfaio of Hamo groatly I'lilargfl (author's ). end of which is usunlly at or near the surf ice, bnt which is caiMble of extension and retraction. The end of this beak is armed with a double row of recurved hooks (see iig. KM), h). The function of these hooks is doubtless to fasten the beak firmly into the skin of the host, while the true pnmping organ must consist, as in the Pediculi, of a slender pierc- ing tube, thcmgh we can see only slight in<u<'ations of this
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherwashi, bookyear1896
