. Elementary entomology. Entomology. 144 FXEMENTARY ENTOMOLOGY lardarius), in stored meats or feathers. These are typical represent- atives of a small family, Dcrmcstidac, of oval, plump beetles, the largest being about one third of an inch long. They are usually grayish, brownish, or blackish, marked with colors due to minute scales with which the body is covered. All of this family feed on. Fig. 203. The saw-toothed grain-beetle. (Much enlarged) a adult; /', pupa; r, lar\'a. (.^fter Chittenden, United States Department of Agriculture) dried animal substances, and some of the smaller species
. Elementary entomology. Entomology. 144 FXEMENTARY ENTOMOLOGY lardarius), in stored meats or feathers. These are typical represent- atives of a small family, Dcrmcstidac, of oval, plump beetles, the largest being about one third of an inch long. They are usually grayish, brownish, or blackish, marked with colors due to minute scales with which the body is covered. All of this family feed on. Fig. 203. The saw-toothed grain-beetle. (Much enlarged) a adult; /', pupa; r, lar\'a. (.^fter Chittenden, United States Department of Agriculture) dried animal substances, and some of the smaller species are par- ticularly noxious to the entomologist, as they are the worst pests which he has to combat in his collection cases. TJic Saxv-Honicd Beetles {Serrieornia) The tribe of saw-homed beetles includes several families of quite different habits, which are very loosely related by all having serrated antennae, the segments of the antennae being prolonged inward so as to give the whole antenna a saw-toothed or serrate appearance. Click-beetles. Every boy knows the long click-beetles, or snap- ping beetles [Elateridae), which, when placed on their backs, will flop up in the air with a decided click, or snap. They are fiat, elongate beetles, the commoner forms being about three fourths of an inch long and of a dull brown color. The head is small and the posterior angles of the thorax are much prolonged, giving it. 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 Sanderson, Dwight, 1878-1944; Jackson, C. F. (Cicero Floyd), b. 1882; Metcalf Collection (North Carolina State University). NCRS. Boston, Ginn
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