Formica dryas gymnomma Wheeler, 1905 junior synonym of current valid taxon Formica obscuriventris Mayr, 1870
Formica dryas var. gymnomma Wheeler, 1905d: 269 (w.) U.S.A. (New York, Illinois). Nearctic.
Primary type information: Primary type material: syntype workers (number not stated). Primary type localities: U.S.A.: New York, Long I., Cold Spring Harbor (W.M. Wheeler) (invalid restriction of type locality by Wheeler, 1913i: 448; no lectotype designated), U.S.A.: Illinois, Rockford (W.M. Wheeler). Primary type depository: MCZC.
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