Grasshoppers, Crickets and Katydids.—These are known to all, [Fig. 136]. There are two families of grasshoppers: those with long horns or antennæ and those with short antennæ. Katydids, crickets, cockroaches and walking-sticks are near relatives to the grasshoppers.
Bugs.—These insects have the front pair of wings thick and heavy at the base and thin and transparent at the tips, [Fig. 137], b. The squash-bug, the chinch-bug, and the electric-light bug are examples of these. Some bugs have the front wings entirely thin and transparent and sloping like a steep roof over the back of the insect, like the cicada, Fig. 137, a; and the Brownie bug, [Fig. 137], c, d.
Fig. 137. a, Cicada. b, Stink-bug. c, Leaf-hopper. d, Leaf-hopper—front view.
Fig. 138. Beetles—showing the pin through the right wing cover. a, Snapping beetle. b, Wood-boring beetle. c, Water beetle.
Fig. 139. Flies—showing the knobs just below the wings. Note that flies have only two wings. a, Crane fly. b, Pomace fly—enlarged.
Beetles.—These have hard wing-covers which meet in a straight line down the back and have a pair of thin wings folded under them, [Fig. 138]. The "June bug" or "May beetle" and the potato beetle are good examples of beetles.