On Centruroides margaritatus (Gervais, 1841) and closely related species (Scorpiones: Buthidae).

Centruroides edwardsii (Gervais, 1843) comb. nov. is restored as a valid species, and a male neotype from Riohacha, La Guajira Department, Colombia is herein designated; this species ranges from Mexico through Colombia, but there are no reliable records from Guatemala, Belize, and Panama; introduced populations also occur in Cuba (West Indies) and Senegal (Africa). We regard the following species as its junior synonyms: Scorpio (Atreus) degeerii Gervais, 1844, Centrurus gambiensis Karsch, 1879, Centruroides margaritatus septentrionalis Hoffmann, 1932, and Rhopalurus danieli Prado et Rios-Pati o, 1940. We also consider Centruroides margaritatus morenoi Mello-Leit o, 1945 as a junior synonym of Centruroides margaritatus (Gervais, 1841). After these tax- onomic changes, the confirmed distribution of C. margaritatus includes northwestern South America (Peru, Ecuador, and Colombia), and the West Indies (introduced in Cuba and Jamaica).