FIGURES 16–23 in New Siberian "spineless" species of Thalassaphorura Bagnall, 1949 (Collembola, Onychiuridae), with a key to world species of the genus

FIGURES 16–23. Thalassaphorura sibirica sp. nov: 16, habitus and dorsal chaetotaxy; 17, dorsal side of Ant. III and IV; 18, sensory rods and sensory clubs of AIIIO; 19, maxillary palp, 20, PAO and anterior cephalic pso; 21, tibiotarsal chaetotaxy and claw of leg III; 22, shape of S-chaetae (a‒‒Th. terga II‒III, b‒‒Sl chaeta on Abd. terga I‒III, c‒‒Sp chaeta on Abd. tergum V); 23, chaetotaxy of Abd. sterna I‒VI.