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A truly migratory European butterfly, this species is famous for occasional mass migrations and subsequent breeding, which are often referred to in the United Kingdom as "clouded yellow years". Notable clouded yellow years include 1877, 1947, 1983, 1992, 1994, 1996 and 2000.
Eurema hecabe, the common grass yellow, [1] [2] is a small pierid butterfly species found in Asia, Africa and Australia. [1] [2] [3] They are found flying close to the ground and are found in open grass and scrub habitats. It is simply known as "the grass yellow" in parts of its range; the general term otherwise refers to the entire genus Eurema.
Eurema lisa, commonly known as the little yellow, little sulphur or little sulfur, is a butterfly species of subfamily Coliadinae that occurs in Central America and the southern part of North America.
The Pieridae are a large family of butterflies with about 76 genera containing about 1,100 species, mostly from tropical Africa and tropical Asia with some varieties in the more northern regions of North America and Eurasia. [1] Most pierid butterflies are white, yellow, or orange in coloration, often with black spots.
Colias is a genus of butterflies in the family Pieridae.They are often called clouded yellows in the Palearctic and sulphurs (a name also used for other coliadine genera) in North America.
Eurema mexicana, the Mexican yellow, sometimes called the wolf-face sulphur, [2] is a North and South American butterfly in the family Pieridae. It occurs mainly in Mexico but occasionally is found in central and southwestern United States and rarely in Canada .
The barred yellow is larger than the dainty sulphur, and the underside of the wings is either all grayish white or brownish red. The little yellow is also larger than the dainty sulphur, lacks the dorsal forewing and hindwing black bars, and on the underside of the forewing lacks the black spots and the yellowish-orange patch.
The wing uppers of the males are bright orange-yellow in ground colour and have a dark edge that is not dusted. The dark border is narrower on the hind wingsand not broken through by veins (in contrast to Colias crocea). The wing uppers of the females are orange-yellow to greenish-white ( C. myrmidone f. alba) in colour and have a dark, dusty ...