Spotless Grass Yellow (Eurema laeta) is a small butterfly which is found in India, Sri Lanka, China, and Indochina and onwards to Australia.

It's wings span is 30-45 mm. It is commonly occurring butterfly of family Pieridae and is common on plains and hills. It prefers clearings and paths. Spotless grass yellow shows distinct seasonal dimorphism. Eggs are laid singly.

In adults upper is bright yellow in both sexes. Upper forewing apex and termen broadly black, the inner edge being unevenly rounded and scalloped. Upper hind wing with narrow terminal black border. Under forewing has a small black spot at end cell. Female has broader borders and denser black dusting on under. Under hind wing pale yellow densely shaded with brown and pink scales and two straight darker brown streaks.