FIGURES 20–23 in The deep-sea fish digenean genus Tellervotrema Gibson & Bray, 1982 (Opecoelidae: Plagioporinae): Re-evaluation of the type species, T. armstrongi Gibson & Bray, 1982 and T. beringi (Mamaev, 1965)

FIGURES 20–23. Variability in testes texture and position in species of Tellervotrema. 20. Smooth and barely separated testes in T. armstrongi from the common Atlantic grenadier, Nezumia aequalis, ventral view. 21. Slightly indented and separated testes in T. armstrongi from N. aequalis, ventral view. 22. Lobed and contiguous testes in T. beringi from the giant grenadier, Albatrossia pectoralis, ventral view. 23. Deeply lobed and contiguous testes in T. beringi from A. pectoralis, ventral view. Scale-bars: 20, 105 µm; 21, 400 µm; 22, 315 µm; 23, 280 µm.