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 . ula. — These arethe cavities in which thelegs are inserted. They aresituated on each side of theposterior part of the ster-num, in each of the thoracicsegments. They are, in gen-eral, formed by an approxi-mation of the sternum andepimerum, and sometimes,also, of the episternum, as inDyticus (Fig. 97, A). Thisconsolidation of parts, saysNewport, gives an amazingincrease of strength to thesegment
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 . ula. — These arethe cavities in which thelegs are inserted. They aresituated on each side of theposterior part of the ster-num, in each of the thoracicsegments. They are, in gen-eral, formed by an approxi-mation of the sternum andepimerum, and sometimes,also, of the episternum, as inDyticus (Fig. 97, A). Thisconsolidation of parts, saysNewport, gives an amazingincrease of strength to thesegments, and is one of thecircumstances which enablesthe insect to exert an aston-ishing degree of muscularpower. Fio. 101. — Internal skeleton of »i/ti cft-ruti. <?. head : A, antenna;/, mandible ; /, meiitimi ; 2, 4, tendonsof mandible: /. n. t. parts of the tento-rium; 8 e, labial muscles. Thorax:2. prothorax ; 3, 4. meso- and nietathoraxfused solidly together; 8/% acetabulumof prothorax, Into which the coxa is Inserted; 2 *, sternum; 3#, aoctabtilnm of mesotlmrax,4r, of nietathorax; 3 s, mesothoracic sternum fused with that of the nietathorax (4(/); 4 ,v,apodeine. — After THE LEGS: THEIR STRUCTURE AND FUNCTIONS 95 TABULAR VIEW OF THE SEGMENTS, PIECES, AND APPENDAGES OF THE THORAX NAME OF SEGMENT PIECES 1. Prothorax 2. Mesothorax 3. Metathorax Pronotum, sometimes differentiated intoScutumScutellumEpisternumEpimerumSternumAntefurca Prtescutum Scutum Scutellum Proscutellum Episternum Epimerum Sternum Mesofurca Mesophragma Apodemes Prtescutum Scutum Scutellum Postscutellum Episternum Epimerum Sternum Postfurca Metaphragma Apodemes AlIENDAGES 1st pair of legs Patagia 2d pair of legs1st pair of wingsTegulse Squamae (Alulse)Peritreme
Size: 952px × 2627px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
