Distribution: Found throughout much of temperate arid Australia, including north-western Victoria, South Australia, south-western Queensland, southern Northern Territory and southern Western Australia. Area of diversity: The southern half of Western Australia, although typically with a single species found in any one locality. Locality with highest diversity: Lesueur National Park (two species). List of species: Inland Sandgrinder Arenopsaltria dryas Moulds and Marshall, 2025 Exmouth Sandgrinder Arenopsaltria exmouthensis Moulds and Marshall, 2025 Perth Sandgrinder Arenopsaltria fullo (Walker, 1850) Eastern Sandgrinder Arenopsaltria nubivena (Walker, 1858) Pygmy Sandgrinder Arenopsaltria pygmaea (Distant, 1904)