First lesson in zoology : adapted for use in schools . Fig. 132.—Nerves of the tongue. Ig, labellar glands; th, taoffle hairs; gb, gland-bristles; n, nerve—Figs. 119-182 after Kraepelin. 123, set). To the side of this segment are attached thetwo wings. The third ring (metathorax) is but partly. Fio. 123.—Thorar of the house-fly. pi-m, pronotum; , praesoutum; sc,mesoscutura: sti, mesoscutellum; psrt, postscutelluni; a/, Insertion ofalula, extending to the insertion of the wing?, which have been removed;msphr, mesophragma; h, balancer (halter; /it, patagia; nitn, metano-tum; epis. epis. ep
First lesson in zoology : adapted for use in schools . Fig. 132.—Nerves of the tongue. Ig, labellar glands; th, taoffle hairs; gb, gland-bristles; n, nerve—Figs. 119-182 after Kraepelin. 123, set). To the side of this segment are attached thetwo wings. The third ring (metathorax) is but partly. Fio. 123.—Thorar of the house-fly. pi-m, pronotum; , praesoutum; sc,mesoscutura: sti, mesoscutellum; psrt, postscutelluni; a/, Insertion ofalula, extending to the insertion of the wing?, which have been removed;msphr, mesophragma; h, balancer (halter; /it, patagia; nitn, metano-tum; epis. epis. epis. epistemum of pro-, meso- and meta-thorax; <-pm. epm,meso- and meta-epimerum: .9^. s/. meso-and meta-sternum; ca;, ca;, ca;,coxae; fr. tr. tr. trochanters of the three pairs of legs; sp. sp. sp\ sp,up, first to fifth spiracles; tg, ty\ tergites of first and second abdominal seg-ments; u\ tt, urites. formed, and cannot be seen from aboye. It supports thebalancers (Fig. 123, h), which are in reality the- hind wings. HOUSE-FLY AND OTHER TWO-WINGED INSECTS. 113 much clianged in form and use. There are also broadscales, under the base of the true wings, called the winglets(alulae). The flys wing is broad, thin, and transparent,and strengthened especially along the front edge by slen-
Size: 1979px × 1263px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1894
