Elementary entomology ([c1912]) Elementary entomology . elementaryentomo00sand Year: [c1912] THE BEETLES 151 droppings, which they carry in for food for the larvae which live in the burrows, while others, known as skin-beetles, feed on dried or decomposing animal matter, frequenting the refuse of tanneries and eating the hoofs and hair of dead animals. Thus the scaven- O gers may be considered as somewhat beneficial, but the leaf-chafers include many of our worst pests. The June-bugs, or May-beetles, '^-'^••l^t. :., / -' .^ .» N ^fr^1 '*> •-• ^~j^ f*'.~ inU ^5&^~K ',*-•. FIG. 216. The r
Elementary entomology ([c1912]) Elementary entomology . elementaryentomo00sand Year: [c1912] THE BEETLES 151 droppings, which they carry in for food for the larvae which live in the burrows, while others, known as skin-beetles, feed on dried or decomposing animal matter, frequenting the refuse of tanneries and eating the hoofs and hair of dead animals. Thus the scaven- O gers may be considered as somewhat beneficial, but the leaf-chafers include many of our worst pests. The June-bugs, or May-beetles, '^-'^••l^t. :., / -' .^ .» N ^fr^1 '*> •-• ^~j^ f*'.~ inU ^5&^~K ',*-•. FIG. 216. The rose-chafer a, adult; /'. larva: c, d, mouth-parts of same ; c, pupa: _/', injured leaves and blossoms of grape, with beetles at work, a, b, c, much enlarged ; c, d, more enlarged : /. slightly reduced. (After Marlatt, United States Department of Agriculture) are among the best-known representatives of this group. They are stout, brown, or blackish beetles nearly an inch long, which fly in and buzz around the lights in early summer. There are some sixty species belonging to this genus (Lachnosterna), the larvae of which are the typical white grubs which attack the roots of grass, corn, and garden crops. These beetles feed at night on various shade and fruit trees, ragging the foliage as if it had been torn. The rose-chafer is another well-known species, which destroys the
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