Thenus Leach, 1815
Thenus Leach, 1815, Transactions of the Linnean Society, London, 11: 335, 338. Gender masculine. Name placed on the Official List of Generic Names in Zoology by the International Commission on Zoological Nomenclature in Opinion 519 (published in 1958).
Sagaritis Billberg, 1820, Enumeratio Insectorum in Museo Gust. Joh. Billberg: 134. Type species by monotypy Scyllarus orientalis Lund, 1793. Gender feminine.
Scyllibacus Desjardins, 1831, Proceedings of the Committee of Science and Correspondence of the Zoological Society of London, 1(4): 46. Type species by monotypy:
Scyllibacus orientalis Desjardins, 1831. Gender masculine. If Scyllibacus orientalis Desjardins is a new combination of Scyllarus orientalis Lund, 1793, Scyllibacus falls as a junior objective synonym of Thenus Leach, 1815; if it is a new species, Scyllibacus is a nomen nudum.