. Elementary entomology . ^ C (U s fc£ V VI <U <u IH -C M o 4-1 ti C cd C <u 6 o C rt cd 0) o o IH <*H u 4-1 rt i- rt CX (U rt IH O rt •s (U ca ro M 6 the mesothorax and metathorax of most adult insects bear a pair of wings. The prothorax is usually smaller than the two posterior seg- ments, the relative size of which de- pends upon which pair of wings is the better developed. The dorsal surface, or back, of a tho- racic segment is called the tergum, or notnm, the ven- tral or under sur- face is the sternum, and each side is a/Av/;7/;;/. These parts are further divided by sutures i
. Elementary entomology . ^ C (U s fc£ V VI <U <u IH -C M o 4-1 ti C cd C <u 6 o C rt cd 0) o o IH <*H u 4-1 rt i- rt CX (U rt IH O rt •s (U ca ro M 6 the mesothorax and metathorax of most adult insects bear a pair of wings. The prothorax is usually smaller than the two posterior seg- ments, the relative size of which de- pends upon which pair of wings is the better developed. The dorsal surface, or back, of a tho- racic segment is called the tergum, or notnm, the ven- tral or under sur- face is the sternum, and each side is a/Av/;7/;;/. These parts are further divided by sutures into distinct plates, or sclerites, to which the appendages are articulated. The de- velopment, shape, size, and position of these sclerites are characters of such uniformity that the sclerites are used in classifying in- sects, in much the same way as are the bones of the vertebrate animals.
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Keywords: ., bookpublisherbostonnewyorketcginnandcompany, booksubjectinsects
