|scientific name Euchloe creusa |
common name Northern Marble
Open coniferous woodland in the mountains and northeastern boreal region.
One brood per year, adults generally flying from early June to late July.
The Northern Marble is most similar to the Large Marble (E. ausonides), but is slightly smaller, with a wingspan of 24 - 36 mm compared to 30 - 48mm. The green marbling on the hindwing underside is more extensive, and the pattern is more broken rather than banded. There are no described subspecies. This species was described from specimens collected at Rock Lake near Jasper (Guppy & Shepard 2001).
The immature stages are undescribed. Very little of the Northern Marble's biology is known.
Not of concern.
The only recorded larval food plant is Lance-leaved Draba (Draba cana) at Moraine Lake (Bird et al. 1995).
Alaska south along the Rocky Mountains to western Montana (Opler 1999). Boreal populations also occur from St Albert, SK north to Great Bear Lake, NWT (Layberry et al. 1998)
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