Order Scorpiones Koch, 1837 - scorpions Suborder Neoscorpionina Thorell & Lindström, 1885 Infraorder Orthosterni Pocock, 1911 Parvorder Iurida Soleglad & Fet, 2003 Superfamily Chactoidea Pocock, 1893 Family Chactidae Pocock, 1893 1 Subfamily Chactinae Pocock, 1893 2 Subfamily Brotheinae Simon, 1879 3 Subfamily Uroctoninae Mello-Leitão, 1934