On the trapdoor spiders of Mexico: description of the first new species of the spider genus Aptostichus from Mexico and the description of the female of Eucteniza zapatista (Araneae, Mygalomorphae, Euctenizidae)

Aptostichus sabinae sp. n. Male holotype: 13–14 Left leg I, prolateral and retrolateral views respectively 15 Tibia I, retrolateral view 16 Tarsus I, retrolateral view17 Metatarsus and tarsus I, dorsal view (arrow indicates the small finger-shaped projection on retrolateral-ventral part of metatarsus) 18 Metatarsus I, retrolateral view (idem) 19 Detail of the small finger-shaped projection on retrolateral-ventral part of metatarsus I. 20, Spination pattern on legs III and IV. Scale bars 0.2 mm (19), 0.5 mm (16, 18), 1 mm (15, 17), 2 mm (13, 14, 20).