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”.