Class Scorpionida Latreille, 1810 - scorpions Order Scorpiones Koch, 1837 - scorpions Suborder Neoscorpionina Thorell & Lindström, 1885 Infraorder Orthosterni Pocock, 1911 Superfamily Chactoidea Pocock, 1893 Family Chactidae Pocock, 1893 Genus Nullibrotheas Williams, 1974