kupu-kupu kuning, common grass yellow

description: Above, the wings are deep lemon-yellow, each with a black border which is regularly scalloped and deeply excavated between veins 2 and 4 in the forewing. Below vein 2 of the forewing, the black border is featured at a right angle to the dorsum or sloping towards the base. Underneath, the wings are also yellow with freckled brown spots. There are typically two cell spots on the forewing - a characteristic that is mainly used to identify the lookalike species in the genus. However, some specimens of the Common Grass Yellow could exhibit variations in which only one or no cell spots are present. Males have a brand lying along the cubital vein on the forewing underside. Females are typically paler yellow with broader black border.