FIGURES 1–8 in New Siberian "spineless" species of Thalassaphorura Bagnall, 1949 (Collembola, Onychiuridae), with a key to world species of the genus

FIGURES 1–8. Thalassaphorura aspinata sp. nov.: 1, habitus and dorsal chaetotaxy; 2, dorsal side of Ant. III and IV; 3, AIIIO; 4, PAO and anterior cephalic pso; 5, tibiotarsal chaetotaxy and claw of leg III; 6, chaetotaxy of anal valves; 7, shape of S-chaetae and modified chaetae of MVO (a‒‒Th. terga II‒III, b‒‒Sl chaeta on Abd. terga I‒III, c‒‒Sp chaeta on Abd. tergum V, d‒‒modified chaetae of MVO); 8, chaetotaxy of Abd. sterna I‒VI.