Erebia callias
Edwards, 1871
Colorado Alpine
Erebia callias, commonly known as the Colorado Alpine, is a in the . It inhabits alpine environments in the Rocky Mountains of Wyoming and Colorado, as well as mountain ranges in the eastern Palearctic. The species has a wingspan of 35–38 mm and is part of the brassy ringlet complex, showing close morphological similarity to Siberian brassy ringlets.
Pronunciation
How to pronounce Erebia callias: /ɛˈrɛ.bi.a ˈkæl.i.əs/
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Identification
Erebia callias is morphologically almost identical to Siberian brassy ringlets, making it difficult to distinguish based on appearance alone. The Rocky Mountains represents a recent isolate that colonized via the Bering Strait approximately 10,000–15,000 years ago at the end of the Wisconsinian glaciation. Geographic origin serves as the primary distinguishing characteristic.
Images
Habitat
Alpine areas in mountain ranges, occurring at high elevations above treeline.
Distribution
North America: alpine areas of Wyoming and Colorado in the U.S. Rocky Mountains. Palearctic: various mountain ranges in eastern Asia including the Saur and Tarbagatai Mountains, Altai Mountains, Sayan Mountains, and Russian Far East.
Similar Taxa
- Erebia tyndarusErebia callias is listed as a synonym of Erebia tyndarus in some taxonomic databases, indicating close taxonomic relationship or conspecificity.
- Siberian brassy ringletsPart of the same brassy ringlet complex with nearly identical ; distinguished primarily by geographic distribution rather than physical characteristics.
More Details
Taxonomic History
Erebia callias has been treated as part of the brassy ringlet complex due to its morphological similarity to Siberian brassy ringlets. Despite the wide geographic separation between , the Rocky Mountains isolate appears to have originated from a recent event across the Bering Strait during the late Pleistocene.
Subspecies
Five are recognized: E. c. callias (Rocky Mountains), E. c. sibirica (Saur and Tarbagatai Mountains), E. c. altajana (Altai Mountains), E. c. simulata (Sayan Mountains), and E. c. tsherskiensis (Far East).