They may sit quietly for hours, legs spread out on vegetation or boat docks, or they may hunt actively in vegetation. Many can run over the surface of water and, if chased, dive and stay submerged for some time. The female carries her huge egg sac in her jaws under her body. When hatching time is near, leaves are tied together with silk, with the egg sac, among them. She has excellent vision and guards the nearby egg sac.
Young spiders leave the nursery about one week later.
Many live near lakes and streams, but occasionally are found indoors in moist areas. They feed on aquatic insects and even small fish. Control Measures Try to determine if the spiders are of the indoor or outdoor type and whether they produce webs. They commonly run, jump or move rapidly. Prevention Sanitation is critical in successful spider control.