. The anatomy of the honey bee. Insects; Bees; Bees Anatomy; Honeybee Anatomy. GENERAL EXTERNAL STRUCTURE OF INSECTS. 21. stemellum (SI), and poststernellum (Psl). In some of the lower insects a plate (x) occurs at each side of the presternum or of the sternum which seems to fall in line with the preepisternum of the pleurum. This has been variously called a part of the presternum, the coxosternum, an accessory sternal plate, and the sternal laterale. The inner surface of the sternum carries a large two-pronged process called the furca or ento- sternum. This plan of structure for the mesothora
. The anatomy of the honey bee. Insects; Bees; Bees Anatomy; Honeybee Anatomy. GENERAL EXTERNAL STRUCTURE OF INSECTS. 21. stemellum (SI), and poststernellum (Psl). In some of the lower insects a plate (x) occurs at each side of the presternum or of the sternum which seems to fall in line with the preepisternum of the pleurum. This has been variously called a part of the presternum, the coxosternum, an accessory sternal plate, and the sternal laterale. The inner surface of the sternum carries a large two-pronged process called the furca or ento- sternum. This plan of structure for the mesothorax and the metathorax preATails throughout all insects. The honey bee probably presents the greatest de- Emp j p • , \ Fig. 5.—Typical insect leg. parture from it, put even *1 here the modification consists principally of a suppression of the sutures of the pleurum resulting from a condensation of the parts. The leg (fig. 5) of an adult insect consists of a number of joints or segments. It is attached to the body, as just described, by a thick specimens. In such preparations, however, one finds that there are in most cases two sclerites here instead of one, and, furthermore,' that one or occa- sionally two others are similarly situated beneath the rear part of the wing base behind the pleural wing process. The present writer has, therefore, made the term " paraptera " cover this whole row of little plates, distinguish- ing those before and those behind the pleural wing process by the designations given above. In the latter part of Audouin's definition it would seem that he may have confused the rudimentary tegula as it exists in some insects with the parapte- ruin, but even this is not probable since he says it is always connected with the episternum. which is never true of the tegula. In his description of the thorax of beetles, Dytiscus, Carabus, Buprestis, and Curculio, it is evident that he regards the anterior upper part of the episternum as the parapterum fus
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