Colias fieldiiColias fieldii, the dark clouded yellow, is a butterfly in the family Pieridae. It is found in southern Iran, India, southern China, Indochina, and Ussuri.BiologyThe larvae feed on Leguminosae species.SubspeciesC. f. fieldii Yunnan, India C. f. chinensis Verity, 1909 S.UssuriTaxonomyAccepted as a species by Josef Grieshuber & Gerardo LamasDescriptionCharles Thomas Bingham gives a detailed description: