The females place their eggs singly, just below the surface of the sand among scattered plants. After about a week, the eggs hatch into larvae one-third of an inch long. The larvae dig a burrow an inch or two deep in the sand. They sit on top of the burrow and prey upon small insects, which they capture with their sickle-like mandibles (principal jaws). As adults they hunt by running along the sand and capturing their prey in their sharp-toothed jaws.