Pheidole angusta Forel, 1908: 373 (s.w.) BRAZIL (São Paulo). Neotropic.

Primary type information: Primary type material: lectotype major worker (by designation of Wilson, 2003a: 167). Primary type locality: lectotype Brazil: São Paulo, Raiz da Serra, 15.x.1906 (H. Luederwaldt). Primary type depository: MHNG. Primary type specimen: CASENT0908214 (lectotype). Secondary type information: Secondary type material: 1 paralectotype minor worker. Secondary type locality: same as for lectotype. Secondary type depository: MHNG. Secondary type specimens: CASENT0908215 MP 5613a, CASENT0908216 MP 5635, MZSP0088676 to MZSP0088686. Type notes: 1) Ulysséa et al., 2025: Table S2, supply the corrected collection details from the handwritten catalogues at MZSP: MP 5614, 15.x.1906, Pheidole angusta For. n. sp. = 11228, H. Luederwaldt, Forel det., Raiz da Serra, vizinas das formigas n. 5613, debaixo da mesma planta, porém só alguns exemplares; MP 5635, 15.x.1906, Pheidole angusta n. sp. (Formicidae), H. Luederwaldt, Raiz da Serra, entre as raízes de bromélias, Forel det., Public! 2) Original collection information: Brazil: São Paulo (H. von Ihering).