Euchloe creusa, the northern marble, is a species of butterfly that occurs in northern North America.[1]
It is mostly white with black markings on the topside of the forewing tips and body. The underside has greenish-grey veins especially in the hindwing. The wingspan is from 24 to 36 mm.[1] Its habitats include subalpine moraines, forest clearings, glades, and dry tundra.[2]
The northern marble's flight season is from late May to mid-July.[1]
Larvae feed on Draba and Brassicaceae species.[3]