Structure and classification of insects . oortionsor segments, called, 1, Head; 2, Thorax; 3, Abdomen,and all the special parts of the body, as mouth, eyes, an-tennae, legs, wmgs, ovipoiitors, &c., are arranged accord-ing to t]ie work they have to do, on one or the other ofthese three STYLOPIZED AXDEENA. The entire body is covered with a skin or crust, thatin some resembles horn or shell, and in others leather,parchment, or even thin membrane. This rind or covering is not the same in compositionto the hair, skin, nails or shell of the higher animals, andit seems to concentrate within i
Structure and classification of insects . oortionsor segments, called, 1, Head; 2, Thorax; 3, Abdomen,and all the special parts of the body, as mouth, eyes, an-tennae, legs, wmgs, ovipoiitors, &c., are arranged accord-ing to t]ie work they have to do, on one or the other ofthese three STYLOPIZED AXDEENA. The entire body is covered with a skin or crust, thatin some resembles horn or shell, and in others leather,parchment, or even thin membrane. This rind or covering is not the same in compositionto the hair, skin, nails or shell of the higher animals, andit seems to concentrate within itself all the active prin-ciples of the 2)lants the insect feeds upon. It is developed into a variety of forms on the same in-sect, e. g., into skin, hair, scales, shell, ring membranes,&c., according to the part of the body on which it isfound. In the abdomen, and sometimes in the thorax, therings of the body are separated from each other by athin skin or membrane, but in the head, and also attimes in the thorax, they are merged together. STEUCTURE OF ADULT INSECTS. THE IMAGO. 37 The arrangement of parts of the exterior of the bodymaybe considered according to the accompanying table: f Labrnm—-upper —lower and other palpi or Mandible
Size: 1975px × 1265px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsects, bookyear1872
