Erebia epipsodea

Butler, 1868

Common Alpine

Erebia epipsodea, commonly known as the Common Alpine, is a in the , Satyrinae. It is distributed across North America from Alaska through the Rocky Mountains to northern New Mexico, and eastward across the Canadian prairie provinces to southwest Manitoba. The species inhabits alpine and montane environments, with active from mid-June to early August. feed on various grass species.

Erebia epipsodea P1470749a by
xpda. Used under a CC BY-SA 4.0 license.

Erebia epipsodea P1470750a by
xpda. Used under a CC BY-SA 4.0 license.

Erebia epipsodea dorsal by JerryFriedman. Used under a CC BY-SA 3.0 license.

Pronunciation

How to pronounce Erebia epipsodea: /ɛˈɹɛbiə ɛˌpɪpˈsoʊdiə/

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Identification

Distinguished from Vidler's alpine (Erebia vidleri) by distribution and presumably subtle morphological differences, though specific diagnostic characters are not detailed in available sources. The ' broad distribution across the Rocky Mountains and prairie provinces may help separate it from more geographically restricted .

Images

Appearance

Wingspan ranges from 34–45 mm. As a member of the Satyrinae , possess the characteristic reduced legs typical of . Specific pattern details are not documented in available sources.

Habitat

Alpine and montane environments. In central Colorado, occurs in areas with marginal weather conditions during the season. Specific vegetation associations are not documented.

Distribution

North America: Alaska south through the Rocky Mountains to northern New Mexico, and east across the prairie provinces (Alberta, Saskatchewan, Manitoba) to southwest Manitoba. show more restricted ranges: E. e. epipsodea in eastern British Columbia and western Alberta; E. e. freemani from eastern Alberta to Manitoba; E. e. remingtoni in northern British Columbia and Yukon; E. e. rhodia in Colorado.

Seasonality

are on from mid-June to early August. activity is influenced by air temperature, wind, and solar radiation.

Diet

feed on various grass . feeding habits are not documented.

Life Cycle

with , larval, pupal, and stages. Larval stage feeds on grasses. Specific details on egg deposition, sites, or stage are not documented.

Behavior

activity is thermally regulated and well adapted to marginal weather conditions. Males exhibit spacing that may serve an epideictic function, promoting greater spacing than would otherwise occur. Flight behavior responds to air temperature, wind, and solar radiation.

Ecological Role

. Larval on grasses. Specific functions are not documented.

Human Relevance

Subject of ecological research on thermal and structure in alpine environments. Not known to be of agricultural or commercial significance.

Similar Taxa

Erebia vidleriVidler's alpine; mentioned as similar in taxonomic sources, though specific distinguishing characters are not detailed

More Details

Subspecies

Five recognized: E. e. epipsodea (eastern British Columbia, western Alberta), E. e. freemani (eastern Alberta to Manitoba), E. e. hopfingeri (range not specified in sources), E. e. remingtoni (northern British Columbia, Yukon), and E. e. rhodia (Colorado)

Research History

Subject of behavioral research in central Colorado examining thermal- relationships and male spacing in large, effectively panmictic