Pseudomyrmex cognatus Ward & Branstetter, 2022: 20, figs. 7, 8, 22 (w.dq.) MEXICO (Chiapas). Neotropic.

Primary type information: Primary type material: holotype worker. Primary type locality: Mexico: Chiapas, Tziscao, Lagos de Montebello, 1,500 m, 16° 05′ N 91° 41′ W, ex dead twig of vine, mixed tropical/temperate mesic forest, 21.xii.1991, PSW11560 (P. S. Ward). Primary type depository: UNAM. Primary type specimen: CASENT0863537. Secondary type information: Secondary type material: paratype workers (number not stated, "a series"), 1 paratype dealate queen. Secondary type locality: same as for holotype. Secondary type depositories: CASC, CZUG, IEXA, JTLC, MCZC, PSWC, UCDC, USNM.