Ischnothyreus an sp. n., male. A, D left palp, prolateral view B, E left palp, retrolateral view C, F left palp, dorsal view G, H left chelicera, anterior and posterior views. Abbreviations: fsp = finger-shaped sclerotized process; lsa = leaf-shaped apophysis; tlp = thorn-like protrusion; vp = ventral projection; vpr = ventral protuberance. Scale bars: A–C = 0.1 mm; D–H = 0.05 mm.