Alopia monacha is a species of small, tropical, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae.

[1] (Description originally in German of Clausilia (Alopia) canescens nixa var.

The color ranges from dark reddish-brown to violet-brown, with a sharply defined white suture thread and a yellowish-white band around the aperture.

Above the sinulus (a concave part of the outer lip) is a bright, dot-like palatal callus.

The short principal fold begins at the dorsal line and either ends midway between it and the aperture or reaches the palatal callus above the sinulus.