Pseudosinella altamirensis sp. nov. A antennae, tip of Ant IV B antennae, Ant III sensory organ C head, dorsal chaetotaxy; Abdomen dorsal chaetotaxy: D abd II E abd III F abd IV G abd V. White dots, Mc (size of the socket proportional to reality); black dots, mic. Scale bars: 0.01 mm (A); 0.02 mm (B); 0.05 mm (C–E); 0.1 mm (F, G).