Opisthacanthus is a genus of scorpions in the family Hormuridae occurring in Central and South America, the Caribbean, Africa and Madagascar.
Species The following species are recognised in the genus Opisthacanthus: Opisthacanthus africanus Simon, 1876 Opisthacanthus ambanja Lourenço, 2014 Opisthacanthus andohahela Lourenço, 2014 Opisthacanthus antsiranana Lourenço, 2014 Opisthacanthus asper (Peters, 1861) Opisthacanthus autanensis Gonzalez-Sponga, 2004 Opisthacanthus basutus Lawrence, 1955) Opisthacanthus borboremai Lourenço & Fe, 2003 Opisthacanthus brevicauda Rojas-Runjaic, Borges & Armas, 2008 Opisthacanthus capensis Thorell, 1876 Opisthacanthus cayaporum Vellard, 1932 Opisthacanthus daraisensis Lourenço, 2006 Opisthacanthus diremptus (Karsch, 1879) Opisthacanthus elatus (Gervais, 1843) Opisthacanthus faillei Lourenço & Wilme, 2019 Opisthacanthus heurtaultae Lourenço, 1980 Opisthacanthus laevipes (Pocock, 1893) Opisthacanthus lamorali Lourenço, 1981 Opisthacanthus lavasoa Lourenço, Wilme & Waeber, 2016 Opisthacanthus lecomtei (Lucas, 1858) Opisthacanthus lepturus (Beauvois, 1805) Opisthacanthus lourencoi Ythier, 2022 Opisthacanthus lucienneae Lourenço, 2006 Opisthacanthus maculatus Lourenço, 2006 Opisthacanthus madagascariensis Kraepelin, 1894 Opisthacanthus milloti Lourenço & Goodman, 2008 Opisthacanthus pauliani Lourenço & Goodman, 2008 Opisthacanthus piceus Lourenço, 2006 Opisthacanthus piscatorius Lawrence, 1955 Opisthacanthus rugiceps Pocock, 1897 Opisthacanthus rugulosus Pocock, 1896 Opisthacanthus surinamensis Lourenço, 2017 Opisthacanthus titanus Lourenço, Wilme & Waeber 2018 Opisthacanthus valerioi Lourenço, 1980 Opisthacanthus validus (Thorell, 1876 Opisthacanthus weyrauchi Mello-Leitão, 1948
Current systematics Subgenus Opisthacanthus Peters, 1861 I. cayaporum group Opisthacanthus cayaporum Vellard, 1932 Opisthacanthus heurtaultae Lourenço, 1980 Opisthacanthus weyrauchi Mello-Leitão, 1948 II. lepturus group Opisthacanthus lepturus (Beauvois, 1805) Opisthacanthus elatus (Gervais, 1844) Opisthacanthus valerioi Lourenço, 1980 Opisthacanthus borboremai sp. n. III. lecomtei group Opisthacanthus lecomtei (Lucas, 1858) Subgenus Nepabellus Francke, 1974 I. africanus group Opisthacanthus africanus africanus Simon, 1876 Opisthacanthus africanus pallidus Lourenço, 2003 Opisthacanthus capensis Thorell, 1876 Opisthacanthus diremptus (Karsch, 1879) II. asper group Opisthacanthus asper (Peters, 1861) Opisthacanthus basutus Lawrence, 1955 Opisthacanthus rugiceps Pocock, 1897 III. laevipes group Opisthacanthus laevipes (Pocock, 1893) IV. rugulosus group Opisthacanthus lamorali Lourenço, 1981 Opisthacanthus rugulosus Pocock, 1896 V. validus group Opisthacanthus piscatorius Lawrence, 1955 Opisthacanthus validus Thorell, 1876 Subgenus Monodopisthacanthus Lourenço, 2001 I. madagascariensis group Opisthacanthus madagascariensis Kraepelin, 1894 Opisthacanthus punctulatus Pocock, 1896
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