A text-book of entomology, including the anatomy, physiology, embryology and metamorphoses of insects, for use in agricultural and technical schools and colleges as well as by the working entomologist . ender neckand diminutive head. The clypeus. - - This is that part ofthe head situated in front of the epi-cranium, and anterior to the eyes, form-ing the roof of the posterior part of the mouth, and is, as embryologyshows, probably a tergal sclerite. It varies greatly in shape and sizein the different orders of insects. It is often divided into two parts,the clypeus posterior and cbjpeus anteri
A text-book of entomology, including the anatomy, physiology, embryology and metamorphoses of insects, for use in agricultural and technical schools and colleges as well as by the working entomologist . ender neckand diminutive head. The clypeus. - - This is that part ofthe head situated in front of the epi-cranium, and anterior to the eyes, form-ing the roof of the posterior part of the mouth, and is, as embryologyshows, probably a tergal sclerite. It varies greatly in shape and sizein the different orders of insects. It is often divided into two parts,the clypeus posterior and cbjpeus anterior, or which may be desig-nated as the post- and «iit(-ip9, 74), and its innerside is lined with a soft membrane, usually provided with hairs andsense-papillae or cups, forming the epipharynx. The labrum is more or less deeply bilobed, especially in caterpil-lars and in adult , and has been thought by some. FIG. 24. — Presumed larva of Nem-optera (Neciojrfiiliiif aren<triux),Pyramids of Egypt. — After Itoux,from Sharp.
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License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
