Temnothorax arboreus Snelling et al., 2014: 38, figs. 5, 19, 24-26 (w.) U.S.A. (California). Nearctic.

Primary type information: Primary type material: holotype worker. Primary type locality: U.S.A.: California, San Diego County, Wooded Hill, 3 km. SW Mt Laguna, 32.85°, -116.43°, 26.v.2004, on low vegetation [beating on Pinus jeffreyi foliage], Pinus jeffreyi forest, #15254 (P.S. Ward). Primary type depository: UCDC. Primary type specimen: CASENT0339243. Secondary type information: Secondary type material: 3 paratype workers. Secondary type locality: same as for holotype. Secondary type depositories: UCDC, PSWC.