Achlyodes sura Moore, 1865[1] Odontoptilum angulata,[2] the chestnut angle or banded angle, is a butterfly belonging to the family Hesperiidae and is found in India[3] and southeast Asia.

Male, forewing dull chestnut-brown along exterior margin, with a black transverse band one-third from the base; a geminated semi-transparent spot on costa before the apex, surrounded by suffused black; a semi-transparent lunule and a small spot on the lower part of the disc, bordered without by a black band: hindwing with a transverse subbasal, an elbowed discal, and a lower submarginal purplish-white line; apex of wing with suffused black patch and lower marginal blackish pale-bordered spots.

Underside brown, forewing suffused with greyish-white at the base; markings as above: hindwing greyish-white, the transverse lines less defined, marginal spots blacker, and a blackish spot near base of wing.

Palpi and body beneath and legs greyish-white.

Female paler, marked on upper-and undersides as in male.