Hymenaphorura subsimilis Bagnall, 1948. A ant III sensory organ B habitus and dorsal chaetotaxy C postantennal sensory organ and anterior cephalic pseudocellus D abdominal terga V and VI E abdominal sternum VI: anal valves. Scale bars: 0.01 mm (A, C); 0.1 mm (B); 0.05 mm (D, E).