
One-spot Grass Yellow
Common NameOne-spot Grass Yellow
Scientific NameEurema andersonii
FamilyPieridae
SubfamilyColiadinae
Wingspan (mm)40
Wing Patternspotted
Primary Colorsyellow, black
HabitatOpen forests, forest edges, clearings, gardens
Geographic RangeSouth and Southeast Asia (India, Sri Lanka, Myanmar, Thailand, Malaysia, Singapore, Indonesia, Philippines, southern China)
Host PlantsCassia, Mimosa, Acacia
Flight PeriodYear-round in tropical regions
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesEggs are laid singly on young leaves of host plants. Larvae are green and cylindrical, feeding on leaves. Pupae are typically green or yellowish, angled, and attached by a silken girdle.
Identification TipsLook for the bright yellow coloration and the distinct black apical border on the forewing. The underside features faint, irregular black markings, and a characteristic 'one spot' on the hindwing, though its prominence can vary.
Description
A small, bright lemon-yellow butterfly with a prominent black border on the forewing apex. The underside of the wings is yellow with faint, irregular black markings and streaks.

