. Nature-study; a manual for teachers and students. Nature study. NATURE-STUDY â i. tj! Fig. 63. A Beetle. and bark-boring beetles are injurious to trees. Carpet-beetles destroy our carpets. Tiger-beetles are active and feed upon other insects, and so does the little polka dotted ladybug. The large, black water-beetle also feeds on other insects. The goldsmith's-beetle is a handsome cousin of the June-beetle. The fire-fly is also a beetle. Fhes, Mosquitoes, and Crane-flies form another order, the Dipt era (Two- winged). The name refers to the fact that these insects have only one pair of fully
. Nature-study; a manual for teachers and students. Nature study. NATURE-STUDY â i. tj! Fig. 63. A Beetle. and bark-boring beetles are injurious to trees. Carpet-beetles destroy our carpets. Tiger-beetles are active and feed upon other insects, and so does the little polka dotted ladybug. The large, black water-beetle also feeds on other insects. The goldsmith's-beetle is a handsome cousin of the June-beetle. The fire-fly is also a beetle. Fhes, Mosquitoes, and Crane-flies form another order, the Dipt era (Two- winged). The name refers to the fact that these insects have only one pair of fully developed wings, the hin,d pair having become rudimentary. The House-fly is typical. This insect lays its eggs on decaying manure or ex- posed meat, etc. Xexy soon smah, white, footless larvae hatch out, which are called maggots, and feed upon the substance in which they are hatched. After about a week the maggots shrink into bar- rel-shaped pupas (corre- sponding to the butterfly chrysalis), from which after another week the adult winged flies emerge. The fly has a rather large head, connected by a very flexible neck to the hairy thorax. This is wefl marked off from the. Fig. 64. Head and Mouth-parts of a Predacious Beetle. (Photomicrograph.). 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 Holtz, Frederick Leopold, 1870-. New York, C. Scribner's Sons
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