''Speyeria atlantis'', the Atlantis fritillary, is a butterfly of the family Nymphalidae of North America. It is from the

Avalon Peninsula The Avalon Peninsula (french: Péninsule d'Avalon) is a large peninsula that makes up the southeast portion of the island of Newfoundland. It is in size. The peninsula is home to 270,348 people, about 52% of Newfoundland's population, according ...

of Newfoundland and Labrador to northern British Columbia, across the northern United States south as far as Colorado and West Virginia. It resides as far north as James Bay. The species is listed as endangered in Connecticut. Atlantis Fritillaries, mating

Its upperside is dark orange with many rows of black markings and black wing margins. Its underside is a light brown with many silvery-white spots. Wingspan ranges from .Atlantis Fritillary
Butterflies of Canada The larvae are hosted by violets. Adult foods include

common milkweed ''Asclepias syriaca'', commonly called common milkweed, butterfly flower, silkweed, silky swallow-wort, and Virginia silkweed, is a species of flowering plant. It is native to southern Canada and much of the United States east of the Rocky Moun ...

, mint, mountain laurel, crown vetch, burdock, boneset, ox-eye daisy, spiraea, and virgin's bower. Atlantis fritillaries are sensitive to temperature with population trajectories showing declines in response to climate warming trends.

Subspecies

Listed alphabetically:"''Speyeria'' Scudder, 1872"
at Markku Savela's ''Lepidoptera and Some Other Life Forms'' *''S. a. atlantis'' *''S. a. canadensis'' (dos Passos, 1935) *''S. a. chitone'' (Edwards, 1879) *''S. a. dodgei'' (Gunder, 1931) *''S. a. beani'' (Barnes & Benjamin, 1926) *''S. a. dennisi'' dos Passos & Grey, 1947 *''S. a. dorothea'' Moeck, 1947 *''S. a. electa'' (Edwards, 1878) *''S. a. elko'' Austin, 1983 *''S. a. greyi'' (Moeck, 1950) *''S. a. hesperis'' (Edwards, 1864) *''S. a. hollandi'' (F. & R. Chermock, 1940) *''S. a. hutchinsi'' dos Passos & Grey, 1947 *''S. a. irene'' (Boisduval, 1869) *''S. a. lais'' (Edwards, 1883) *''S. a. lurana'' dos Passos & Grey, 1945 *''S. a. nausicaa'' (Edwards, 1874) *''S. a. nikias'' (Ehrmann, 1917) *''S. a. schellbachi'' Garth, 1949 *''S. a. tetonia'' dos Passos & Grey, 1945 *''S. a. viola'' dos Passos & Grey, 1945 *''S. a. wasatchia'' dos Passos & Grey, 1945

Similar species

*Aphrodite fritillary (''Speyeria aphrodite'') *Great spangled fritillary (''Speyeria cybele'') *Northwestern fritillary (''Speyeria hesperis'')

References

Speyeria Butterflies of North America Fauna of the Northwestern United States Fauna of Western Canada Butterflies described in 1862 Taxa named by William Henry Edwards {{Heliconiinae-stub