Bactrodesmus grandis sp. nov., SEM micrographs of a ♂ paratype A anterior part of body, lateral view B–D midbody segments, lateral, dorsal and ventral views, respectively E cross-section of a midbody segment, caudal view F fine tergal structure, dorsal view G head, ventral view H midbody paratergum, lateral view I from right to left, legs 1–3 in situ, lateral view J leg-pair 1, oral view K leg 2 and base of leg 3, frontoventral view L coxae 2, subventral view M leg 3 and bases of several following legs, frontoventral view. Scale bars: 0.2 mm (A–E), 0.1 mm (G, I–K, M), 0.05 mm (I, L), 0.02 mm (F).