Cryptocerus duckei Forel, 1906d: 233, fig. 1 (s.) BRAZIL (Amazonas). Neotropic.

Primary type information: Primary type material: lectotype soldier (by designation of Kempf, 1967e: 363). Primary type locality: lectotype Brazil: Amazonas, Rio Negro, Barcellos, 2.vii.1905 (A. Ducke). Primary type depository: MHNG. Secondary type information: Secondary type material: 1 paralectotype soldier. Secondary type locality: same as for lectotype. Secondary type depository: MHNG.