Eutrichodesmus lipsae sp. n., ♂ paratype; A habitus, lateral view B, E, I anterior part of body, lateral, dorsal and ventral views, respectively C, F, J midbody segments, lateral, dorsal and ventral views, respectively D, G, K posterior part of body, lateral, dorsal and ventral views, respectively H cross-section of a midbody segment, caudal view L poriferous midbody paratergite, lateral view M tergal seta, subdorsal view N both gonopods in situ, ventral view O, P right gonopod, mesal and ventromesal views, respectively Q tip of right gonopod, subventral view. Scale bars: 0.5 mm (A, E–G, I), 0.2 mm (B–D, H, J, K), 0.1 mm (N–P), 0.05 mm (L), 0.02 mm (Q), 0.002 mm (M).