Ischnothyreus meukyawwa sp. nov., male holotype, left palp, SEM A, B, G prolateral, retrolateral and dorsal views C, D palpal bulb, prolateral and retrolateral views E, F, H distal part of palpal bulb, prolateral, retrolateral and dorsal views. Abbreviations: hsm = hook-shaped membrane; lpp = leaf-shaped prolateral projection; rl = retrolateral lobe; vpr = ventral protuberance.