Myrmica occidentalis Cresson, 1865 an obsolete combination of Pogonomyrmex occidentalis (Cresson, 1865)
Myrmica occidentalis Cresson, 1865b: 426 (w.q.) U.S.A. (Colorado). Nearctic.
Primary type information: Type-material: 2 syntype workers, 2 syntype queens. Type-locality: U.S.A.: Colorado Territory. Type-depository: ANSP.
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