Eciton (Acamatus) pilosum var. beebei Wheeler, 1921d: 312, fig. 7b (w.m.) GUYANA. Neotropic.

Primary type information: Type-material: lectotype male (by designation of Borgmeier, 1955: 373). Type-locality: Guyana (“British Guiana”): about Kartabo, 20-21.vii.1920, and 28.vii.1920 (Beebe), and same data (W.M. Wheeler). Type-depository: MCZC. Secondary type information: Paratype-material: paralectotype workers, paralectotype males (numbers not stated).