Colias hyale, the pale clouded yellow, is a butterfly of the family Pieridae, which is found in most of Europe and large parts of the Palearctic. It is a rare migrant to the British Isles and Scandinavia. The adult wingspan is 52–62 millimetres (2.0–2.4 in).
Colias is a genus of butterflies in the family Pieridae. They are often called clouded yellows; the North American name "sulphurs" is elsewhere used for Coliadinae in general. The closest living relative is the genus Zerene, which is sometimes included in Colias.
Colias palaeno, known by the common names moorland clouded yellow, palaeno sulphur, and pale Arctic clouded yellow, is a butterfly in the family Pieridae.
Colias philodice, the common sulphur or clouded sulphur, is a North American butterfly in the family Pieridae, subfamily Coliadinae.
Colias nastes, the Labrador sulphur, is a butterfly in the family Pieridae. In Europe, it is found in the north of Norway and Sweden and on rare occasions in northern Finland. It is also found in North America, specifically in Alaska, Canada, and the Rocky Mountains, Washington, Montana and on Greenland. In Asia, it is found in the Altai Mountains, the border regions of Russia, China, Mongolia, Kazakhstan, the Sayan Mountains, the north of Siberia, and in the Chukotka Autonomous Okrug.
Colias hecla, the northern clouded yellow or hecla sulphur, is a butterfly in the family Pieridae. In Europe, it is found in the northern part of Norway, Sweden and Finland up to heights of 900 m. It is also found in Greenland, Alaska, the Northwest Territories, Yukon, Quebec, Labrador, Manitoba, the Chukot region, eastern Chukotka, and the Russian Far East.
Colias chippewa, the heath sulphur, is a butterfly in the family Pieridae found in North America and northeastern Asia. Its range includes Alaska across northern Canada, including all the territories, and as far east as Labrador. and the Russian Far East.
Colias chlorocoma is a butterfly in the family Pieridae found in Transcaucasia, Turkey and Iran.
Colias viluiensis, is a butterfly in the family Pieridae. It is found in Transbaikalia.
Colias felderi is a butterfly in the family Pieridae. It is found in Tibet and China.
Colias fieldii, the dark clouded yellow, is a butterfly in the family Pieridae. It is found in southern Iran, India, southern China, Indochina, and Ussuri.
Colias flaveola is a butterfly in the family Pieridae. It is found in the Tropical Andes subregion of the Neotropical realm.
Colias heos is a butterfly in the family Pieridae. It is found in the East Palearctic.
Colias hyperborea is a butterfly in the family Pieridae. It is found in the East Palearctic.
Colias sifanica is a butterfly in the family Pieridae. It is found in the eastern Palearctic realm.
Colias regia is a butterfly in the family Pieridae. It is found in the East Palearctic.
Colias romanovi is a butterfly in the family Pieridae. It is found in the eastern Palearctic realm.
