. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. Fk;. is. Month parts of a House-fly. Fig. 20. Under surface of Head and Thorax of a Si^uaeh bug ; a the odour glands ; b the sucking beak ; c the antenna'. (Original). The respiratory system is clearly shown in Fig. 22. The breathing- pores, or spiracles, are valve-like openings lying along each side, and open al- most directly into a tube which runs lengthwise of the body. From these. Fig. 21. Caterpillar showing i>ro-legs as well as feet. two main tubes branches run in all directions through t
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. Fk;. is. Month parts of a House-fly. Fig. 20. Under surface of Head and Thorax of a Si^uaeh bug ; a the odour glands ; b the sucking beak ; c the antenna'. (Original). The respiratory system is clearly shown in Fig. 22. The breathing- pores, or spiracles, are valve-like openings lying along each side, and open al- most directly into a tube which runs lengthwise of the body. From these. Fig. 21. Caterpillar showing i>ro-legs as well as feet. two main tubes branches run in all directions through the body to the main organs. In many insects there are bulb-like expansions which act as air- reservoirs. By means of the system of tubes, or tracheae, air is carried to all portions of the body, and the blood is rapidly purified by exchanging carbon-. 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 Entomological Society of Ontario; Ontario. Dept. of Agriculture. Toronto, The Society
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
