Notonecta

Notonecta, known as common backswimmers, is a genus of backswimmer insects in the family Notonectidae. Species in this genus include:
 * Notonecta borealis
 * Notonecta glauca
 * Notonecta hoffmanni
 * Notonecta indica
 * Notonecta insulata
 * Notonecta irrorata
 * Notonecta kirbyi
 * Notonecta lobata
 * Notonecta lunata
 * Notonecta maculata
 * Notonecta marmorea
 * Notonecta meridionalis
 * Notonecta montezuma
 * Notonecta obliqua
 * Notonecta ochrothoe
 * Notonecta pallidula
 * Notonecta petrunkevitchi
 * Notonecta raleighi
 * Notonecta repanda
 * Notonecta shooteri
 * Notonecta spinosa
 * Notonecta uhleri
 * Notonecta undulata
 * Notonecta unifasciata
 * Notonecta viridis