Classification
Tree [regio]Heteroptera [subordo]
Belostomatidae [familia]
Belostomatinae [subfamilia]
Appasus [genus]
Genus Appasus Amyot & Serville, 1843 contains the following taxa:
Appasus japonicus Vuillefroy, 1864 [species]
Appasus major (Esaki, 1934) [species]
Appasus nepoides (Fabricius, 1803) [species]
Appasus urinator Dufour, 1863 [species]