Clathurella pusilla Dunker, 1871 (original combination) Acrista pusilla is a species of sea snails, marine gastropod mollusks in the family Clathurellidae.

(Original description in Latin) The shell is small, oblong-ovate and subfusiform.

The shell contains 8-9 convex whorls with longitudinal ribs and is transversely lined with striae.

The colour of the shell is yellow, the interstices of the ribs are marked with darker lines.

[2] This marine species occurs off the Fiji Islands.