Leucicorus, : Nielsen, 1974

Schwarzhans, Werner W., Nielsen, Jørgen G. & Mundy, Bruce C., 2022, Revision of the circumglobal deep-sea genus Leucicorus (Teleostei, Ophidiidae) with two new species, Zootaxa 5100 (4), pp. 541-558 : 543

Key to species of Leucicorus

1a Extensive squamation on opercle, preopercle and occiput; transversal scale rows ≥25; inner face of otolith more strongly convex than outer face.................................................................................... 2

1b Reduced squamation on opercle, preopercle and occiput; transversal scale rows ≤21 (not considering ROV live photographs); inner face of otolith nearly flat, outer face distinctly convex................................................... 3

2a Dorsal fin rays 110–114; anal fin rays 96–99; vertebrae 68–69; transversal scale rows 35–40.................. lusciosus

2b Dorsal fin rays 97; anal fin rays 73–80; vertebrae 62; transversal scale rows 25...................... gerringerae n. sp.

3a Dorsal fin rays 88–94; anal fin rays 68–80; no eye lens or lens smaller than 10% of black eye; OL:OH = 1.2–1.55.................................................................................................... atlanticus

3b Dorsal fin rays 105; anal fin rays 87; lens at least 50 % of black eye; OL:OH = 1.73..................... lentibus n. sp.