The encyclopædia britannica; a dictionary of arts, sciences, literature and general information . Afttr Mulatt, Ent. Bui!. 3, n. s. ( DqjL Agr.). Fig. 3.—Thorax of Saw-Fly (Pachynemalus). I, Dorsal view. d, Pronotum, II, Ventral view. Mesothorax: III, Lateral view. e, Prescutum. IV, Lateral view with /, Scutum,segments separated, g, Scutellum. Prothorax: A, Post-scutellum. a. Episternum. i, Mesophragma. b. Sternum. j, Epimeron. c. Coxa of fore-leg. k, present on the thighs, shins and feet of insects, some of them•o delicate as to be termed hairs others so stout and hard
The encyclopædia britannica; a dictionary of arts, sciences, literature and general information . Afttr Mulatt, Ent. Bui!. 3, n. s. ( DqjL Agr.). Fig. 3.—Thorax of Saw-Fly (Pachynemalus). I, Dorsal view. d, Pronotum, II, Ventral view. Mesothorax: III, Lateral view. e, Prescutum. IV, Lateral view with /, Scutum,segments separated, g, Scutellum. Prothorax: A, Post-scutellum. a. Episternum. i, Mesophragma. b. Sternum. j, Epimeron. c. Coxa of fore-leg. k, present on the thighs, shins and feet of insects, some of them•o delicate as to be termed hairs others so stout and hard that /, Coxa of middle leg. Metathorax:»t. , Coxa of hind , First Abdominal Segment,t, Tegula at base of AftCT MiaH and Dciny, The Cedroadi, LoveD Rteve & Co. Fig. 4.—Legs and Ventral Thoracic Sclerites of Female Cockroach(Blatta).Fore-leg and pro-sternum (S) to, Tarsal segments. I. in front of which are theventral cervical sclerites ex. Coxa. Ir, , Thigh. tb, Shin. they are named spines or spurs. In the relative developmentand shape of t)ie variQUSi segments 0/ the leg there is almost endless II, Middle leg and mesosternum. III, Hind leg and IIIa, the episternum (a) and epimeron (b) are slightly separ-ated. variety, dependent on the order to which the insect belongs, andthe special function—walking, running, climbing, digging orswimming—for which the limb is adapted. The walking of insectshas been carefully studied by V. Graber (1877) and J. Demoor (1890),who find that the legs are usually moved in two sets of three, the firstand third legs of one side moving with the second leg of the tripod thus affords a firm base of support while the l
Size: 1274px × 1962px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectencyclo, bookyear1910
