. A manual for the study of insects. Insects. 502 THE STUDY OF INSECTS. The tergum or dorsal wall of each thoracic segment is composed typhically of four sclerities. These are ar- ranged in a linear series (Figs. 608, 609). They are named, beginning with the first or most cephalic, prccscutum (prae-scu^tum) (a), scutum (scu^tum) {b),scutellum (scu-tel'lum) {c), and postscutellum (post-scu-tel'lum) {d). In the prothorax of beetles the sutures between these four sclerites are obsolete, the pronotum appearing to be composed of a single sclerite (Fig. 609, 14). The mesonotum and metanotum are usua
. A manual for the study of insects. Insects. 502 THE STUDY OF INSECTS. The tergum or dorsal wall of each thoracic segment is composed typhically of four sclerities. These are ar- ranged in a linear series (Figs. 608, 609). They are named, beginning with the first or most cephalic, prccscutum (prae-scu^tum) (a), scutum (scu^tum) {b),scutellum (scu-tel'lum) {c), and postscutellum (post-scu-tel'lum) {d). In the prothorax of beetles the sutures between these four sclerites are obsolete, the pronotum appearing to be composed of a single sclerite (Fig. 609, 14). The mesonotum and metanotum are usually covered by the wings and. Fig. 608.—Diag^ram of the fixed parts of a thoracic Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. joint author. Ithaca, N. Y. , Comstock Pub. Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895
