Order Araneida Clerck, 1757 - spiders Suborder Araneae Clerck, 1757 - tailless spiders Infraorder Opisthothelae Pocock, 1892 - unsegmented spiders Microorder Araneomorpha Smith, 1902 - araneomorphs Neocribellatae Caporiacco Dipneumonomorpha Clade Palpimanoidea Thorell, 1869 Family Mecysmaucheniidae Simon, 1895