At first, If your butterfly from Indonesia, I'm not sure this "orange sulfur (colias)" but i believe: this is from the family Eurema (grass yellow butterflies in the family Pieridae). and from its special characteristics at the beginning of the forewing: it have two spots! The species of your butterfly is Eurema hecabe (common GrassYellow).
There are three families of yellow butterflies: Please check again and make compare the family of Eurema (grass yellow) x Cloudless Sulphur (Phoebis Sennae fam) and also Clouded yellows (Colias fam).
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I mean colias is a genus :) but c'mon we checkagain this yellow butterfly.
At first, If your butterfly from Indonesia, I'm not sure this "orange sulfur (colias)" but i believe: this is from the family Eurema (grass yellow butterflies in the family Pieridae). and from its special characteristics at the beginning of the forewing: it have two spots! The species of your butterfly is Eurema hecabe (common GrassYellow).
There are three families of yellow butterflies: Please check again and make compare the family of Eurema (grass yellow) x Cloudless Sulphur (Phoebis Sennae fam) and also Clouded yellows (Colias fam).