Entomology for beginners; for the use of young folks, fruitgrowers, farmers, and gardeners; . scutellum being a smaller, central, shield-like protergum, or what is usually in the books called theprothorax, represents either the scutum or both scutumand scutellum, the two not being differentiated. The fore wings are long and narrow, and thicker thanthe hinder, which are broad, thin, and membranous, andmost active in flight, being folded up like a fan when atrest and tucked away out of sight under the fore wings,which act as wing-covers. Turning now to the side of the body under the in
Entomology for beginners; for the use of young folks, fruitgrowers, farmers, and gardeners; . scutellum being a smaller, central, shield-like protergum, or what is usually in the books called theprothorax, represents either the scutum or both scutumand scutellum, the two not being differentiated. The fore wings are long and narrow, and thicker thanthe hinder, which are broad, thin, and membranous, andmost active in flight, being folded up like a fan when atrest and tucked away out of sight under the fore wings,which act as wing-covers. Turning now to the side of the body under the insertionof the wings (Fig. 2), we see that the side of each of themiddle and hind thoracic rings is composed of two pieces,the anterior, episternum, resting on the sternum, with theepimerum behind it; these pieces are vertically high and * There are in many insects, as in many Lepidoptera, Hymenoptera,and Neuroptera, four tergal pieces—, praescutum, scutum, scutel-lum, and postscutellum, the first and fourth pieces being usuallyvery small and often obsolete. THE STRUCTURE OF 5 o .- a 5 s IP B a <DI •a •§ •a § •3 ~« Be2 fe- <H ^J 5 S, g .s rt w — I (C . 23 i .8 I of I 6 ENTOMOLOGY. narrow, and to them the leg is inserted by three pieces,called respectively coxa, trochantine, and trochanter (seeFig. 2), the latter forming a true joint of the leg. The legs consist of five well-marked joints, the femur(thigh), tibia (shank), and tarsus (foot), the latter consist-ing in the locust of three joints, the third bearing two largeclaws with a pad between them. The hind legs, especiallythe femur and tibia, are very large, adapted for hopping. The sternum is broad and large in the middle and hindthorax, but small and obscurely limited in the prothorax,with a large conical projection between the legs. The head in the adult locust is mainly composed of a sin-gle piece called the epicranium (Figs. 2 and 3, E), whichcarries the compound eyes, ocelli, or simple
Size: 955px × 2617px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectinsects
