Eurema simulatrix tecmessa

de NicÚville 1896 - The Hill Grass Yellow

Koh Samui and Koh Pha Ngan.

There are six members of the Eurema genus on the Islands. They are all very similar, and it is nearly impossible to identify most of them on the wing. The main differences between the species are a) the number of spots in the underside forewing cell, combined with b) the shape of the upperside forewing black markings and c) the shape of the apical area markings on the forewing underside. As the English name suggests, this species should be looked for on grasslands, and other open spaces.

This species is of small to medium size for the group, has two cell spots, with the black forewing border deeply excavated. The underside forewing apical area has a reddish brown apical spot, not as complete as Eurema sari.

A common species, which is equally at home in forest clearings as in grasslands.

Flight Period



35 - 47mm

Early Stages

Not known

Larval Foodplant

Not known


S. Burma, Malay Peninsular, Sumatra, Java and Borneo. Other subspecies in rest of Thailand, Indo-China, Mindanao and Palawan (both Philippines) and Sulawesi