Ischnothyreus spp., left male palp A–C I. cristiformis sp. nov. D–F I. mangun sp. nov. G–I I. mengyang sp. nov. J–L I. qidaoban sp. nov. M–O I. qiuxing A, D, G, J, M prolateral view B, E, H, K, N dorsal view C, F, I, L, O retrolateral view. Scale bars: 0.1 mm (A–F, M–O); 0.2 mm (G–L).