Opisthacanthus is a genus of scorpions in the family Hemiscorpiidae (Liochelidae) occurring in central and South America, the Caribbean, Africa and Madagascar.
The species in this genus are:
Opisthacanthus africanus (Simon, 1876)Opisthacanthus asper (Peters, 1861)Opisthacanthus basutus (Lawrence, 1955)Opisthacanthus brevicauda Rojas-Runjaic, Borges & Armas, 2008Opisthacanthus capensis (Thorell, 1876)Opisthacanthus cayaporum (Vellard, 1932)Opisthacanthus daraisensis (Lourenço, 2006)Opisthacanthus diremptus (Karsch, 1879)Opisthacanthus elatus (Gervais, 1843)Opisthacanthus laevipes (Pocock, 1893)Opisthacanthus lamorali Lourenço, 1981Opisthacanthus lecomtei (Lucas, 1858)Opisthacanthus lepturus (Beauvois, 1805)Opisthacanthus lucienneae (Lourenço, 2006)Opisthacanthus maculatus (Lourenço, 2006)Opisthacanthus madagascariensis (Kraepelin, 1894)Opisthacanthus piceus (Lourenço, 2006)Opisthacanthus piscatorius (Lawrence, 1955)Opisthacanthus punctulatus (Pocock, 1896)Opisthacanthus rugiceps (Pocock, 1897)Opisthacanthus rugulosus (Pocock, 1896)Opisthacanthus valerioi (Lourenço, 1980)Opisthacanthus validus (Thorell, 1876)Opisthacanthus weyrauchi (Mello-Leitão, 1948)Subgenus Opisthacanthus Peters, 1861 I. cayaporum group
Opisthacanthus cayaporum Vellard, 1932Opisthacanthus heurtaultae Lourenço, 1980Opisthacanthus weyrauchi Mello-Leitão, 1948
II. lepturus group
Opisthacanthus lepturus (Beauvois, 1805)Opisthacanthus elatus (Gervais, 1844)Opisthacanthus valerioi Lourenço, 1980Opisthacanthus borboremai sp. n.III. lecomtei group
Opisthacanthus lecomtei (Lucas, 1858)Subgenus Nepabellus Francke, 1974 I. africanus group
Opisthacanthus africanus africanus Simon, 1876Opisthacanthus africanus pallidus Lourenço, 2003Opisthacanthus capensis Thorell, 1876Opisthacanthus diremptus (Karsch, 1879)II. asper group
Opisthacanthus asper (Peters, 1861)Opisthacanthus basutus Lawrence, 1955Opisthacanthus rugiceps Pocock, 1897
III. laevipes group
Opisthacanthus laevipes (Pocock, 1893)IV. rugulosus group
Opisthacanthus lamorali Lourenço, 1981Opisthacanthus rugulosus Pocock, 1896
V. validus group
Opisthacanthus piscatorius Lawrence, 1955Opisthacanthus validus Thorell, 1876Subgenus Monodopisthacanthus Lourenço, 2001 I. madagascariensis group
Opisthacanthus madagascariensis Kraepelin, 1894Opisthacanthus punctulatus Pocock, 1896