Octostruma triangulabrum Longino, 2013b: 52, figs 1A, 3A, 5J, 38, 43 (w.) MEXICO (Chiapas). Neotropic.

Primary type information: Primary type material: holotype worker. Primary type locality: Mexico: Chiapas, Nahá, 19.96291, -91.59335, ±2 km., 950 m., 10.vi.2008, mesophil forest, ex sifted leaf litter (LLAMA Wm-A-07-all). Primary type depository: CASC. Primary type specimen: CASENT0608768. Secondary type information: Secondary type material: 9 paratype workers. Secondary type localities: paratype/s with same data as holotype, paratype/s with same data as holotype but 16.97417, -91.58592, ±50 m., 950 m., 14.vii.2007, #6047-s (J. Longino), and #2007-013 (R.S. Anderson), paratype/s with same data as holotype but 16.96313, -91.59337, ±50 m., 985 m., 8.vi.2008 (LLAMA Wa-A-07-1-06), paratype/s with same data as holotype but 16.96318, -91.59337, ±50 m., 985 m., 8.vi.2008 (LLAMA Wa-A-07-1-07), paratype/s with same data as holotype but 16.94866, -91.59392, ±50 m., 930 m., 8.vi.2008 (LLAMA Wa-A-07-2-08). Secondary type depositories: CASC, CFSS, JTLC, MCZC, MZSP, UCDC, USNM, UVGC.