Class Scorpionida Latreille, 1810 - scorpions Order Scorpiones Koch, 1837 - scorpions Suborder Neoscorpionina Thorell & Lindström, 1885 Infraorder Orthosterni Pocock, 1911 Superfamily Vaejovoidea Thorell, 1876 Family Vaejovidae Thorell, 1876 1 Subfamily Uroctoninae Mello-Leitão, 1934 2 Subfamily Vaejovinae Thorell, 1876 3 Subfamily Syntropinae Kraepelin, 1905