Glomeridesmus siamensis sp. nov., male holotype (ZCSWU Myr D000011) mouthparts A gnathochilarium, ventral view B gnathochilarium, palps and central pad, frontal view C endochilarium, dorsal view D mandibular gnathal lobe, mesal view. Abbreviations: cp = central pad, ec = endochilarium, et = external tooth, gu = gula, ip = inner palp, ia = intermediate area, it = inner tooth, LL = lamella lingualis, Lp = lateral palp, me = mentum, mp = molar plate, pL = pectinate lamellae, stp = stipes. Scale bars: 100 µm (A), 50 µm (B, D), 20 µm (C).