Taxonomic overview of the greater fritillary genus Speyeria Scudder and the atlantis - hesperis species complexes, with species accounts, type images, and relevant literature (Lepidoptera: Nymphalidae) Author Dunford, James C. text Insecta Mundi 2009 2009-09-26 2009 90 1 74 journal article 10.5281/zenodo.5352660 1942-1354 5352660 Speyeria hesperis viola dos Passos and Grey, 1945 ( Figure 36 ) Speyeria atlantis viola dos Passos and Grey, 1945: 10 . Speyeria hesperis viola dos Passos and Grey [ Scott et al. 1998 ]. Common name. Viola’s fritillary Type deposited. Holotype at American Museum of Natural History ( Figure 36 ). Type locality. Trail Creek, Sawtooth Mountains, Idaho . Type label data. “ Holotype [male] Speyeria atlantis viola Cyril f. dos Passos and L. Paul Grey; J. D. Gunder collection Ac. 34998; Trail Creek Ida. 7400ft. VII.11.31; Col. C. W. Herr”. Identification, taxonomy, and variation. Both sexes are similar to S. h. irene but are somewhat paler in the disc. Adults are rather small and spots are entirely unsilvered on the ventral hindwings. Adult wingspan ranges from 45-50 mm . Range. Sawtooth Mountains, Idaho and eastern Oregon . Life history. Nothing could be gleaned from the literature.