"Opisotretus beroni" ♂ paratype from Mount Fugilil (summit); A, D, G anterior body part, dorsal, lateral and ventral views, respectively B, E, H midbody segments, dorsal, lateral and ventral views, respectively C, F, I posterior body part, dorsal, lateral and ventral views, respectively J cross-section of a midbody segment K antenna, lateral view L right paratergite 13, dorsal view M tergal setae N claw. – Scale bars: G 0.5 mm; A, C–F, H–K 0.2 mm; B, L 0.1 mm; M 0.05 mm; N 0.01 mm.