Naucoris nepoides Fabricius, 1803: 111. STS: 2 spec., Guineae [= Ghana, Togo, Benin or Nigeria]; ZMUC (see Zimsen, 1964).
Diplonychus luridus Germar, 1838: 121 (syn. Horváth, 1926b: 2). ST(S): Promontorii Bonae Spei [= Cape of Good Hope].
Appasus natator Amyot & Serville, 1843: 431 (syn. Mayr, 1871: 433). ST(S): Sénégal.
Diplonychus aegypticus Herrich-Schaeffer, 1845: 26 (syn. Stål, 1866a: 184, with luridus). ST(S): Egypt.
Appasus coenosus Stål, 1855a: 46 (syn. Stål, 1866a: 184, with luridus). STS: 2 spec., S Africa, Natalensi [= Natal]; NHRS.
?Appasus quadrivittatus Bergroth, 1893a: 213 (syn. Poisson, 1949a: 16, suspected). ST(S): Madagascar; unknown (not in MZHF; Jansson, 1987a: 6).