Formica caustica Kollar, 1832: 17, fig. 12 (w.) BRAZIL. Neotropic.

Primary type information: Primary type material: holotype (?) worker. Primary type locality: Brazil: (no further data). Primary type depository: unknown. Type notes: 1) No indication of number of specimens is given. 2) Neither Pohl nor Kollar are mentioned in Horn & Kahle, 1935 or Horn & Kahle, 1936.