Primary type information:
Primary type material: holotype major worker. Primary type locality: U.S.A: California, Imperial County, 3 mi. (4.8 km.) E Imperial, -21 m., 4.v.1956 (R.R. Snelling). Primary type depository: LACM.
Secondary type information:
Secondary type material: 59 paratype major and minor workers, 1 paratype queen. Secondary type locality: same as for holotype. Secondary type depositories: BMNH, LACM, MCZC, UCDC.