Berytus meridionalis A. Costa, 1843a: 27. HT (as LT by Péricart in Carapezza et al., 1995: 282): female, Italy, nr Naples; ZIUN (see note).
Megalomerium pallidum Fieber, 1859b: 208 (syn. Puton, 1881g: 128). ST(S): France, Corsica; lost?
Cardopostethus fulvus Jakovlev, 1875: 155 (syn. Horváth, 1889b: 326). ST(S): Russia (ST), Sarepta [= Krasnoarmeysk, nr Volgograd; ZMAS?
Metacanthus pusillus (non Horváth, 1912): Linnavuori, 1960: 47 (junior secondary homonym of Megalomerium pusillum Horváth, 1912; syn. Péricart, 1976b: 371). HT: male, Israel, Dan; AMNH.
Metacanthus linnavuorii Péricart, 1976b: 371. Unavailable new name for pusillus Linnavuori, 1960 (Kment & Carapezza, 2017: 590).
Metacanthus linnavuorii Štusák, 1977d: 338. New name for pusillus Linnavuori, 1960.