Euchloe hyantis lotta
Beutenmüller, 1898
Euchloe hyantis lotta is a of Pearly Marble in the Pieridae. The parent E. hyantis ranges from southern British Columbia to northern Mexico west of the Rocky Mountains. Males of the species engage in , flying swiftly along ridgelines to intercept females. The subspecies lotta was described by Beutenmüller in 1898 and is currently treated as a synonym of Euchloe lotta.
Pronunciation
How to pronounce Euchloe hyantis lotta: /ˈjuːkloʊ hiˈæntɪs ˈlɒtə/
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Identification
The Pearly Marble can be distinguished from the Large Marble (Euchloe ausonides) by geographic range, as E. hyantis occurs west of the Rocky Mountains while E. ausonides has a broader distribution including areas east of the Rockies. The Spring White (Pontia sisymbrii) is similar in but lacks the marbled hindwing pattern. The Cabbage White (Pieris rapae) has more extensive black markings on the forewing apex and lacks the marbled hindwing underside.
Images
Habitat
Prairie and dry meadow , rocky slopes, and ridgelines where occurs. Associated with open, sunny areas in mountainous or hilly terrain.
Distribution
Western North America from southern British Columbia to northern Mexico, west of the Rocky Mountains. The subspecific status of lotta suggests a more restricted range within this broader distribution, though precise boundaries are not well documented in available sources.
Seasonality
are on the wing in spring, with period varying by elevation. Lower elevations see earlier , while higher elevations have later flight periods. The has one to two annually depending on location.
Host Associations
- mustard family plants - larval Larvae feed on plants in the Brassicaceae, though specific plants for this are not documented
Behavior
Males engage in , flying rapidly and erratically along ridgelines to locate and intercept females. rarely pause except briefly at flowers. When perched, individuals orient themselves to maximize camouflage against the background, effectively concealing the bright white forewings.
Similar Taxa
- Euchloe ausonides (Large Marble)Overlaps in some areas but E. ausonides occurs east of the Rockies while E. hyantis is restricted to the west; E. ausonides has been documented as regionally extinct in parts of California while E. hyantis persists
- Pontia sisymbrii (Spring White)Similar period and preference, but lacks marbled hindwing pattern and has different wing shape
- Pieris rapae (Cabbage White)Similar size and white coloration, but has black forewing markings and lacks marbled hindwing; more widespread and common in disturbed
More Details
Taxonomic status
GBIF lists this as a synonym of Euchloe lotta. The original description by Beutenmüller in 1898 predates modern molecular systematic approaches, and the validity of this subspecies requires reevaluation.
Conservation context
While not specifically assessed, the parent E. hyantis appears to be persisting in its western range while related species like E. ausonides have experienced regional extinctions in parts of California due to climate change and alteration.