. A manual for the study of insects. Insects. THYSANURA. 85 water appear to be covered by a moving mass of minute grains which become more active when disturbed. These masses as well as the dark specks on snow consist of thou- sands of little creatures that are provided with a wonderful means of jumping. There is on the end of the body a taiUike organ that is bent under when the insect is at rest, and that reaches almost to the head ; this when suddenly straightened throws the insect high in the air and several feet away. This action is like a spring-board jump, only these little fellows alway
. A manual for the study of insects. Insects. THYSANURA. 85 water appear to be covered by a moving mass of minute grains which become more active when disturbed. These masses as well as the dark specks on snow consist of thou- sands of little creatures that are provided with a wonderful means of jumping. There is on the end of the body a taiUike organ that is bent under when the insect is at rest, and that reaches almost to the head ; this when suddenly straightened throws the insect high in the air and several feet away. This action is like a spring-board jump, only these little fellows always carry their spring-boards with them, and have thus won the name of Spring-tails. The species upon snow, called the Snow-flea, Achorutes nivicola (Ach-o-ru^tes ni-vic^o-la), sometimes proves a nuisance in maple sugar-bushes by get- ting into the sap. Through a micro- scope a Spring-tail appears very ab- surd, it has long antennae and large, dark eye-spots on the face, which, to- gether with the longhair that sticks forward on the head and thorax, give the creature a look of solemn c T^'rr Fig. 93.—Papirius yuscus. (After fierceness. Different species may Lubbock.) be found at almost any time of the year in damp places. Figure 93 represents one of these. In many forms the body is much more slender than in that 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
