The lesser sand rat occurs in Algeria, Libya, and Tunisia. It is distinct from the related P. obesus.
It differs from P. obesus in body measurements and external features, as well as biochemical, genetic, and chromosomal traits.
Sand rats in the genus Psammomys are mostly diurnal and feed on Chenopodiaceae plants in saline dryland habitats.
An extinction-risk assessment has not been added yet.