Syscia transisthmica Longino & Branstetter, 2021: 38, figs. 12, S66-67 (w.q.) MEXICO (Oaxaca). Neotropic.

Primary type information: Type-material: holotype worker. Type-locality: Mexico: Oaxaca, Mirador Grande, 17.89844 −96.36253 ±503m, 990m, 14.viii.2009, montane tropical rainforest, ex sifted leaf litter, MGB1405 (M.G. Branstetter). Type-depository: UNAM. Type-specimen: CASENT0644006. Secondary type information: Paratype-material: paratype worker/s (number not stated), paratype queen/s (number not stated). Paratype-locality: same as for holotype. Paratype-depository: CASC.