Eurema andersoni andersoni - Moore 1886    The Anderson's Grass Yellow

Species details: There are seven members of the Eurema genus on Samui. 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 size for the group, has a single cell spot, with the black forewing border deeply excavated and slightly inclined towards the tornus below vein 2. Underside forewing apical area NOT darkened.

An apparently rare species on Samui, but this may be due to mis-identification in the field.

Early Stages         : Known. More detailed life history information is available from the following resource: ButterflyCircle Blog (courtesy of Dr. Horace Tan.)

Larval Foodplant : Various Rhamnaceae

Range                    : Peninsular Thailand, Mainland Malaysia, Borneo and Sumatra. Other subspecies in India, Burma, Indo-China, S. China, Taiwan, Java and Palawan (Philippines).