Pseudomyrmex acanthobius (Emery ^HNS 1896b).

Pseudomyrma acanthobia Emery ^HNS 1896b: 628. [w syntypes examined, MCSN, MHNG; Paraguay (Bohls)] .

Pseudomyrma acanthobia var. fuscata Emery ^HNS 1896b: 629. NEW SYNONYMY . [w syntypes examined, MCSN, MHNG; Paraguay (Bohls)] .

Pseudomyrmex acanthobius (Emery) ^HNS. Kusnezov 1953: 214.

Pseudomyrmex acanthobius var. fuscatus (Emery) ^HNS. Kempf 1972: 215.

Pseudomyrmex acanthobius ^HNS, a small pallidus-group species with large eyes and a relatively swollen fore femur, has been recorded sporadically from Paraguay nesting in Acacia ^HNS thorns. Emery described both P acanthobius ^HNS and P. acanthobius var. fuscatus ^HNS in the same paper (Emery 1896b), distinguishing the two forms on the basis of color. The collections I have seen of this species can vary from orange-yellow to dark brown. Phil Ward, who is currently revising Pseudomyrmex ^HNS, has examined Emery’s types and my recent Paraguayan collections and concluded that the color variation is intraspecific. As there are no other characters that reliably differ between the forms, I see no reason to dissent from Ward’s assessment.