Eutrichodesmus trontelji sp. n., ♂ paratype; A habitus, lateral view B, E, I anterior part of body, lateral, dorsal and ventral views, respectively C, F midbody segments, lateral and dorsal views, respectively D, G, J posterior part of body, lateral, dorsal and ventral views, respectively H cross-section of a midbody segment, caudal view K limbus, prozonite texture and tergal setae, dorsal view L, M tergal seta, dorsolateral and subdorsal views, respectively N both gonopods in situ, ventral view O, P right gonopod, lateral and mesal views, respectively. Scale bars: 0.5 mm (A, I, J), 0.2 mm (B–H), 0.1 mm (N–P), 0.05 mm (K), 0.005 mm (L, M).