Auriculastra pusilla is a species of air-breathing land snail, a terrestrial gastropod mollusc in the family Ellobiidae, the salt marsh snails.
The length of the shell attains 3 mm, its diameter 1.5 mm.
(Original description in Latin) The white shell is subulate-ovate, shining and smooth. The spire is elongated with a sharp apex. The aperture is oblong and narrow. The columella is somewhat callous and bears three folds: the posterior fold is strong, while the anterior folds are small and oblique. The outer lip has a slightly thickened margin and is scarcely sinuated at the back.
This species occurs off the Philippines, Indonesia and India.