Colias erschoffi is a butterfly in the family Pieridae. It is found in Tien-Shan.
Colias erschoffi is a pretty yellow species, in which also the male bears a complete row of submarginal spots, the sexes therefore being very similar; the hindwing is greenish yellow, with sharply defined yellow submarginal band and a large reddish yellow middle spot which has a light centre and is distally produced into a point.
Flies from the middle of May till July and August, at elevations of 5,000 to 7,000 feet (1,500 to 2,100 m).
