Hydrocyrius colombiae Spinola, 1850: 107. HT: male, Colombia (in error); unknown (not in MRSN, Spinola coll.; see Casale, 1981).
Belostoma algeriense Dufour, 1855: 186 (syn. Gerstaecker, 1856: 293). HT: female (dissected), Algeria, Mondavi, nr Bone [= Annaba], Seybouse R.; MNHN?
Ilyotrephes herculeus Stål, 1855a: 46 (syn. Gerstaecker, 1856: 293). STS: 2 spec., S Africa, Natalensi [= Natal]; NHRS.
Belostoma capitatum Guérin-Méneville, 1857: 420 (syn. Mayr, 1871: 429). ST(S): Cuba? (in error); ZIUN (1 female, see Menke, 1962: 62).
Hydrocyrius columbiae Dufour, 1863: 386. Incorrect subsequent spelling.
Belostoma cosmopolitanum Coindé, 1863: 339 (syn. Torre Bueno, 1907: 340). Nomen nudum.