Pseudosinella altamirensis sp. nov. A Th II pseudopore B claw and empodium appendage of leg III C distal par of dens and mucro D tip of dens and mucro, not visible by the covering scales of terminal dens E mucro partially covered by scales and chaetae F mucro and mucronal spine. Scale bars: 0.004 mm (A, F); 0.02 mm (B, D); 0.04 mm (C); 0.007 mm (E).