Genus Paruroctonus

The sand swimmers of the North American deserts: pale vaejovids adapted to loose dune substrate, fast across it, mild-venomed, and sedentary everywhere else.

Genuine deep sand is the husbandry, not a generic arid mix, and getting the substrate right is most of keeping the genus. Hardy, undemanding, seasonal in appetite.

Western seasonal collection carries deep supply, nobody breeds them because collection is trivial, and the permanent US-native structure applies. At the listing level the genus blurs with Smeringurus in both directions, which the photographs settle. The dune niche prices by abundance and stays there, indefinitely.