Myrmica crassirugis Francoeur, 2007: 164, figs. 28-31 (w.q.m.) U.S.A. (Idaho). Nearctic.

Primary type information: Primary type material: holotype worker. Primary type locality: U.S.A.: Idaho, Bingham & Clark Counties, Idaho National Engineering and Environmental Laboratory, 31.viii.1991 (no. 9172), and 22.ix.1989 (no. 8929) (W.H. Clark). Primary type depositories: MCZC. Secondary type information: Secondary type material: paratype workers, paratype queens, paratype males (numbers not stated, “two nest series”). Secondary type locality: same as for holotype. Secondary type depositories: AFPC, BMNH, CASC, CICI, LACM, MCZC, MHNG, USNM.