Pogonomyrmex desertorum var. tenuispina Forel, 1914d: 269 (w.) MEXICO. Nearctic.

Primary type information: Type-material: holotype (?) worker. Type-locality: U.S.A.(?): (no further data) (T. Pergande). Type-depository: MHNG. Type notes: 1) No indication of number of specimens is given. 2) Creighton, 1950a: 125, says the type-locality is “uncertain, probably Lower California”, (= Mexico, Baja California). Cole, 1968: 77 agrees that the type-locality is unknown, but is most probably Baja California. Other specimens from the type-series may remain in Pergande collection, in USNM.