Waterbug

Waterbug or water bug can refer to any of several things:

True bugs
 * The true water bugs (Nepomorpha), including such insects as giant water bugs, creeping water bugs and backswimmers
 * Various other aquatic true bugs, known collectively as water bugs
 * Heteroptera

Cockroaches
 * The American cockroach, Periplaneta americana
 * The German cockroach, Blattella germanica
 * The Oriental cockroach, Blatta orientalis

Giant Water Bug
 * Belostomatidae