It contains the species Oxygnostis diacma, which is found in Sri Lanka.

The forewings are dull orange-yellow with a minute metallic-grey black-edged basal mark.

There is a small dark metallic-grey black-mixed spot in the disc near the base.

There are three indistinct cloudy rather broad pale fuscous fasciae, the first at one-fourth, angulated in the middle, the second oblique, from towards the middle of the costa to before the tornus, the third oblique, about three-fourths, little marked.

The hindwings are grey, in males with a longitudinal median furrow throughout, suffused with whitish-ochreous, suffusion extending around the apex, and a long ochreous-yellow hair-pencil from the base, lying in a groove beneath the cell, the tornal area clothed with modified dark grey hair-scales.