Primary type information: Primary type material: lectotype worker (by designation of Ward, 1985b: 231). Primary type locality: unknown, lectotype "Hab. -- ?; the habitat is probably Brazil". Primary type depository: BMNH. Secondary type information: Secondary type material: 1 paralectotype worker. Secondary type locality: same as for lectotype. Secondary type depository: BMNH. Type notes: Type locality is discussed by Ward, 1985b: 232, who says “It seems likely that the types of Pseudomyrmex ejectus came from the United States or Central America rather than Brazil”.
- Smith, F. 1858a. Catalogue of hymenopterous insects in the collection of the British Museum. Part VI. Formicidae. London: British Museum, 216 pp. PDF
- Ward, P. S. 1985b. The Nearctic species of the genus Pseudomyrmex (Hymenoptera: Formicidae). Quaestiones Entomologicae 21:209-246. PDF