Platylister sororius Lewis, 1904: 142.
Original description. "Oblongo-ovatus, depressus, niger, nitidus; fronte impressa, stria integra; elytris 1 - 3 validis integris, 4 apicali, 5 et suturali brevissimis; propygidio; propygidio transversim punctato; pygidio utrinque impresso, grosse et dense punctato, margine distincte elevato. L. 5.1/4 6.1/2 mill.
Oblong-oval, rather depressed, black and shining; the head is microscopically punctured, forehead impressed, with the stria complete; the thorax, lateral stria well marked and continuted behind the head; the elytra, striae, outer humeral continued behind the head; the elytra, striae, outer humeral fine and complete, inner wanting, oblique stria extremely fine, 1 3 dorsal strong and complete, 4 apical, in length one fourth of the elytron, 5 and sutural shorter, the last sometimes rudimentary; propygidium transversely punctured; pygidium densely and evenly on each side, where there is a lateral impression; the mesosternum is clearly marginate; the anterior tibiae are 4-dentate.
Similar to P. suturalis, Lew., from Burma, but a little more parallel laterally. P. atratus, Er. (common in India), is similar in form, but the pygidium is not marginate, and it is without the short sutural stria.
Hab. Nilgiri Hills (H. Leslie Andrewes) and Mahé, Malabar (Donckier)."