Monomorium bidentatum Mayr ^HNS comb. rev.

Monomorium bidentatum Mayr ^HNS, 1887: 616 (w, q).

Monomorium (Notomyrmex) bidentatum ^HNS: Emery, 1922: 169.

Monomorium (Notomyrmex) bidentatum piceonigrum ^HNS Borgmeier, 1948: 468 (w); Kusnezov, 1960: 345 (as junior synonym of bidentata ^HNS).

Notomyrmex bidentatum ^HNS: Kusnezov, 1960: 345.

Nothidris bidentatus ^HNS: Ettershank, 1966: 107.

Antichthonidris bidentatus ^HNS: Snelling, 1975: 5 - 6 (w, q, m); Wheeler & Wheeler, 1980: 533 (larvae).

Antichthonidris bidentata ^HNS: Bolton, 1995: 67.

Heterick (2001) synonymized Antichthonidris ^HNS under Monomorium ^HNS, but did not make the appropriate nomenclatural changes in the two species assigned to that genus.