Mayr, 1863a: 426, 451 (Leptalea, Pseudomyrma); Roger, 1863b: 24; Smith, 1877b: 58; Cresson, 1887: 262 (U.S.A.); Dalla Torre, 1893: 55; Emery, 1921c: 28; Smith, 1951c: 788 (North America Leptalea); Kempf, 1972b: 215 (Neotropical); Smith, 1979: 1345 (North America); Brandão, 1991: 373; Bolton, 1995b: 370.
Smith, 1858a: 153 (diagnosis); Mayr, 1865: 24 (diagnosis); Mayr, 1870a: 407 (Colombia + Panama (= New Grenada) species key); Emery, 1899f: 6 (larvae); Emery, 1921c: 28 (diagnosis); Gallardo, 1932a: 44 (Argentina species key); Enzmann, 1944: 62 (all species keys); Creighton, 1950a: 79 (Nearctic species key); Kempf, 1961a: 373 (Pseudomyrmex gracilis group, partial key); Alayo, 1974: 9 (Cuba species key); Ward, 1985b: 215 (Nearctic species key); Billen, 1986b: 173 (Dufour's gland); Ward, 1989a: 407 (Pseudomyrmex oculatus group key); Ward, 1989a: 430 (Pseudomyrmex subtilissimus group key); Ward, 1990: 469 (diagnosis, review of genus); Ward, 1992: 76 (Dominican Amber species key); Ward, 1993: 130 (swollen-thorn Acacia-associated species key); Bolton, 1994: 184 (synoptic classification); Bolton, 1995a: 1052 (census); Ward, 1999b: 473 (Pseudomyrmex viduus: group, and other Tachigali- and Triplaris-associated species key); Mackay & Mackay, 2002: 38 (U.S.A., New Mexico species key); Baccaro et al., 2015: 354 (genus in Brazil); Ward, 2017: 526, 533, 540 (species group key, Pseudomyrmex ferrugineus group key, Pseudomyrmex goeldii group key); Ward & Branstetter, 2017: 1 (Pseudomyrmex ferrugineus group phylogeny); Cantone, 2017: 277 (brief male diagnosis); Ward, 2019: 1092 (Colombia species key); Ward, 2019: 1092 (Colombia species key); Ward & Branstetter, 2022: 1 (Pseudomyrmex elongatulus group phylogeny, divergence dating, biogeography, classification), 9 (Pseudomyrmex elongatulus group diagnosis, species key (workers, queens).
Extant: 147 valid species (57 synonyms, 5 homonyms, 2 unavailable, 1 obsolete combination), 8 valid subspecies (77 synonyms, 1 unavailable, 5 obsolete combinations)
Fossil: 13 valid species