Formica rufa melanotica Creighton, 1940 junior synonym of current valid taxon Formica obscuripes Forel, 1886
Formica rufa subsp. melanotica Creighton, 1940a: 1, 7 (in key), fig. 1 (w.) U.S.A. (Wisconsin). Nearctic.
Primary type information: Primary type material: syntype workers (number not stated). Primary type locality: U.S.A.: Wisconsin (no collector’s name). Primary type depository: MSNG.
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