Records of the short-tailed whipscorpion Stenochrus portoricensisChamberlin, 1922 (Schizomida: Hubbardiidae) from greenhouses in North Rhine-Westphalia are presented together with detailed diagnostic drawings of the species. Stenochrus portoricensis is native to southern North America and the Caribbean and is the most commonly introduced species of Schizomida in Europe. In Germany the species has only been recorded previously from Hesse. A review of all introduced schizomid records in Europe reveals that S. portoricensis is currently the only species that occupies habitats outside of greenhouses.