FIGURES 18–21. Sabacon claviger (Menge, 1854), SIZK K-7898, from Rovno amber (Klesov, Pugach quarry, Ukraine), late Eocene. 18 Detail of the body and limbs, dorsal view. 19 Detail of the body and limbs (view from back), showing the opisthosomal dorsum ornamented by regular rows of black thorns (arrowed). 20 Detail of the left pedipalp in ventro-ectal view, showing tibia and tarsus throughout with dense brush-like setae and the tibial long seta (arrowed). Part of the palpal setae are not visible due to amber aberrations—compare with Fig. 21. 21 Detail of the right pedipalp, showing the tibia and tarsus, closer ectal view. Scale bars: 18–19: 1 mm; 20: 0.5 mm; 21: 0.3 mm. ; Published as part of Mitov, Plamen G., Perkovsky, Evgeny E. & Dunlop, Jason A., 2021, Harvestmen (Arachnida: Opiliones) in Eocene Rovno amber (Ukraine), pp. 43-72 in Zootaxa 4984 (1) on page 60, DOI:10.11646/zootaxa.4984.1.6, http://zenodo.org/record/4928494