Grass-yellow
Guides
Eurema
Grass Yellows, Grass Yellow
Eurema is a widespread genus of grass yellow butterflies in the family Pieridae, comprising over 70 species distributed across Asia, Africa, Australia, Oceania, and the New World. The genus exhibits remarkable evolutionary phenomena including Wolbachia-induced feminization in multiple species, where genetic males are converted into functional females. Many species are characterized by seasonal diphenism—producing distinct wet-season and dry-season wing morphs. The type species is the North American barred yellow (Eurema daira).