Notonecta minutissima Linnaeus, 1758: 439. STS: 2 males, Europe; LSUK.
Notonecta atomaria Pallas, 1771: 469 (syn. Kerzhner, 1977a: 359). ST(S): Russia, Novgorod, Volkhov River; not located (Kerzhner, 1977a).
Micronecta rugicollis Horváth, 1901a: 144 (syn. Lindberg, 1924a: 5). HT: male, Finland, Sammatti; MZHF.
Micronecta wagneri Linnavuori, 1951b: 52 (syn. Wróblewski, 1958: 270). HT: male, Finland, Tuulos; AMNH.