The bugs are easily recognized. They have the mouth parts arranged as a sucking beak or proboscis. The chinch bug (Fig. 208), the squash bug (Fig. 209), the seventeen-year cicada, or locust (Fig. 210), and the bean aphis (Fig. 211) are well-known examples. They represent a group dreaded for many reasons; many are parasites on man and beast, while many others destroy crops of various kinds.
Fig. 209.—Squash bug.
In nearly all fresh-water ponds and pools curious flat, long-legged creatures (Fig. 212) are seen darting over the surface, being perfectly at home. They are water boatmen, and one species (Fig. 213) is found far out at sea.
Fig. 210.—Cicada.
Fig. 211.—Bean aphis.
