Upperside olive brown: forewing with two small yellowish semi-transparent spots within end of cell, three before the apex, and in the male three oblique discal spots followed by a dark-bordered slender straight impressed glandular streak: hindwing with one or two very indistinct pale discal spots.

Underside paler; markings more distinct; hindwing also with a spot at upper end of the cell.

mathias is considered a pest to rice-growing cultures, although it is not as damaging to rice plants as Parnara guttata.

Newly hatched caterpillars are especially voracious in eating young seedlings.

They also use silken threads to roll up and stitch together partially eaten leaves for more efficient consumption.