. Elementary entomology . Fig. 203. The saw-toothed grain-beetle. (Much enlarged) a, adult; /', pupa; <-, larva. (After 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-Horncd Beetles {Serrieornia) The tribe of saw-horned 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
. Elementary entomology . Fig. 203. The saw-toothed grain-beetle. (Much enlarged) a, adult; /', pupa; <-, larva. (After 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-Horncd Beetles {Serrieornia) The tribe of saw-horned 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 flat, 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
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Keywords: ., bookcentury1900, bookdecade1, booksubjectentomology, bookyear1912
