. Nature-study; a manual for teachers and students. Nature study. NATURE-STUDY and l^ark-boring beetles arc injurious to trees. Carpet-beetles destroy our carjjets. Fig. 63. A Beetle. Tiger-beetles are active and feed upon other insects, and so does the Httle 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. Flies, Mosquitoes, and Crane-flies form another order, the Diptera (Two- winged). The name refers to the fact that these insects have only one pair of fully develop
. Nature-study; a manual for teachers and students. Nature study. NATURE-STUDY and l^ark-boring beetles arc injurious to trees. Carpet-beetles destroy our carjjets. Fig. 63. A Beetle. Tiger-beetles are active and feed upon other insects, and so does the Httle 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. Flies, Mosquitoes, and Crane-flies form another order, the Diptera (Two- winged). The name refers to the fact that these insects have only one pair of fully developed wings, the This insect lays its eggs on hind pair having become rudimentary The House-fly is typical decaying manure or ex- posed meat, etc. \'ery soon small, white, footless larvte 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 pupcE (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 well 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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