Xerosecta giustii is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae, the hairy snails and their allies.

Their shell is colored grey to whitish grey with dark reddish brown apex (end).

There can be weak and thin interrupted brown bands.

Their diet consists of open Mediterranean shrub land vegetation, on the soil and under stones, also on branches of bushes and grass stems.

There is only one known population that occupies an area of not more than 100 x 100 m.  They are threatened by habitat destruction.