Comprehensive DescriptionRead full entry
General DescriptionThe uniform brown-grey underside with a single row of white-edged submarginal dots, and complete absence of marginal markings, make this an easily identifiable blue. Subspecies couperi occurs throughout most of Alberta, and oro is found in the extreme south (Bird et al. 1995). The larger, paler, populations in the southwestern Mountains are subspecies columbia (C. Schmidt, unpubl. data).