Trilacuna yunmeng sp. nov., left male palp, A–F (light) and G–L (SEM) A, G prolateral view B, H dorsal view C, I retrolateral view D, J distal part of palpal bulb, prolateral view E, K distal part of palpal bulb, dorsal view F, L distal part of palpal bulb, retrolateral view. Abbreviations: bep = basal ear-shaped projection; lcb = lateral curved branch; mb = medial branch. Scale bars: 0.1 mm (A–C, G–I); 0.05 mm (D–F, J–L).