Tapeinus Laporte, 1833: 81. Type species by monotypy (see Kerzhner, 1993a: 51): Tapeinus pictus Laporte, 1833, Indonesia (Java).
Opinus Laporte, 1833: 78. Objective synonym of Tapeinus.
Tapinus Burmeister, 1835: 236; auct. Incorrect subsequent spelling.
Sminthus Stål, 1859b: 186 (junior homonym of Sminthus Keyserling & Blasius, 1840, Mammalia). Type species by subsequent designation (Distant, 1904a: 279): Tapeinus pictus Laporte, 1833, Indonesia (Java).
Sminthocoris Distant, 1904a: 279 (syn. Kirkaldy, 1906d: 249). New name for Sminthus Stål.