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 alfacariensis, Berger's clouded yellow, is a butterfly of the family Pieridae. It was separated from the pale clouded yellow, C. hyale, in 1905. Berger's clouded yellow is a Palearctic species (South and Central Europe, South Russia, Russian Far East, Siberia Central Asia and temperate China also Asia Minor, Caucasus and Transcaucasia.
Colias is a genus of butterflies in the family Pieridae. They are often called clouded yellows in the Palearctic and sulphurs in North America. 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 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 tyche, the Booth's sulphur or pale Arctic clouded yellow, is a butterfly in the family Pieridae. It is found from Baffin Island west along the Hudson Bay and arctic coasts of the Nunavut and Northwest Territories mainland and the southern tier of Arctic Islands to northern Yukon, Alaska, and Eurasia.
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 meadii, the Mead's sulphur, is a butterfly in the family Pieridae found in North America. Its range includes the Rocky Mountains in Canada and the United States.
Colias pelidne, the pelidne sulphur or blueberry sulphur, is a butterfly in the family Pieridae found in North America. Its range includes British Columbia across Canada as far east as Newfoundland and south to Idaho, Montana, and Wyoming.
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 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 lada is a butterfly in the family Pieridae. It is found in the East Palearctic.
Colias leechi is a very little known butterfly in the family Pieridae. It was described from the East Palearctic "In ramificationibus occidentalibus montium Himalayensium in valle Chonging".
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.
Colias adelaidae is a butterfly in the family Pieridae. It is found in the eastern Palearctic realm.
