Mastigoproctus

Mastigoproctus is a genus of whip scorpions. Native to the tropical forest regions of northern South America, these whip scorpions can reach a length of up to 9 cm and can weigh over 30 g. Despite popular belief, they are not venomous as, like all other whip scorpions, they do not possess venom glands.

Species
, the World Uropygi Catalog accepts the following twenty-fives species:
 * Mastigoproctus abeli Villarreal & Giupponi, 2009 – Venezuela
 * Mastigoproctus annectens Werner, 1916 – Brazil
 * Mastigoproctus ayalai Viquez & Armas, 2007 – Venezuela
 * Mastigoproctus baracoensis Franganillo, 1931 – Cuba
 * Mastigoproctus brasilianus (C. L. Koch, 1843) – Brazil
 * Mastigoproctus butleri Pocock, 1894 – Brazil
 * Mastigoproctus cinteotl Barrales-Alcalá, Francke & Prendini, 2018 – Mexico
 * Mastigoproctus colombianus Mello-Leitão, 1940 – Colombia
 * Mastigoproctus floridanus Lönnberg, 1897
 * Mastigoproctus formidabilis Hirst, 1912 – Venezuela
 * Mastigoproctus franckei Barrales-Alcalá & Francke, 2023
 * Mastigoproctus giganteus (Lucas, 1835) – United States
 * Mastigoproctus lacandonensis Ballesteros & Francke, 2006 – Mexico
 * Mastigoproctus maximus (Tarnani, 1889) – Brazil
 * Mastigoproctus mexicanus (Butler, 1872)
 * Mastigoproctus minensis Mello-Leitão, 1931 – Brazil
 * Mastigoproctus perditus Mello-Leitão, 1931 – Brazil
 * Mastigoproctus proscorpio (Latreille, 1806) – Dominican Republic, Haiti, Martinique
 * Mastigoproctus santiago Teruel, 2010 – Cuba
 * Mastigoproctus scabrosus Pocock, 1902
 * Mastigoproctus tohono Barrales-Alcalá, Francke & Prendini, 2018
 * Mastigoproctus transoceanicus Lazell, 2000
 * Mastigoproctus vandevenderi Barrales-Alcalá, Francke & Prendini, 2018 – Mexico
 * Mastigoproctus xetame Barrales-Alcalá & Francke, 2023
 * Mastigoproctus yalchanchak Barrales-Alcalá & Francke, 2023