Classification
Tree [regio]Heteroptera [subordo]
Notonectidae [familia]
Notonectinae [subfamilia]
Subfamilia Notonectinae Latreille, 1802 contains the following taxa:
Enithares Spinola, 1837 [genus]
Notonecta Linnaeus, 1758 [genus]
Nychia Stål, 1859 [genus]