Notonecta obliqua Thunberg, 1787: 61. STS: Sweden?
Notonecta furcata Fabricius, 1794: 58 (syn. Kirkaldy, 1897d: 419). ST(S): France, Paris.
Notonecta obliqua var. delcourti Poisson, 1933: 326 (syn. Kanyukova, 1973a: 359). ST(S): France (Normandy) and Belgium.