Octostruma betschi Perrault, 1988

(Figs 1E, 3D, 7A, 19, 42)

Octostruma betschi Perrault 1988: 303, 2 figs. Holotype worker, paratype workers, queen: French Guiana, [published locality of "5°30'S, 53°W" is incorrect] (J. M. Betsch) [MNHN] (not examined).

Geographic range. Amazonian Brazil and Peru, French Guiana.

Comments. The combination of O. balzani-group mandibles, two pairs of setae on the promesonotum, and flattened setae on the scape uniquely characterize this distinctive species. New measurements for the worker are HW 0.51-0.57, HL 0.47-0.53, CI 106-108 (n=4). The queen is reported with measurements HW 0.58, HL 0.55, CI 105 (Perrault, 1988).