Euchloe naina, the green marble, is a species of butterfly that occurs in northern North America and Siberia and has been recorded mainly in the interior of Alaska but has also been recorded on Kodiak by Keith Bruce and verified by Kenelm Philips in 2012. 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 30 to 36 mm. The green marble's flight season in North American is from June 7 to 28.