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When it was first discovered, the Uncompahgre Fritillary was described as a distinct species, Boloria acrocnema (Gall and Sperling 1980). However, based on molecular genetic and other data now available, Simonsen et al. (2010) concluded that the treatment of this taxon in recent years as a subspecies of B. improba (B. i. acrocnema) is appropriate (one of these authors, F.A.H. Sperling, was one of the two authors of the original description).