Tetranemertes bifrost sp. nov. A–C external appearance in life of individuals CBdT0062 (A), CB057_18_01 (B), and CB057_18_07 (C) showing variation in color D ventral view of anterior end of individual SMCP0366 showing cephalic furrow (arrowhead) E, F close up views of head in dorsal (E) and ventral (F) view of individual CB057_18_01 showing distribution of pigment, eyes, and the cephalic furrow (arrowhead on F) G anterior end of individual CB057_18_03 compressed under a glass slide to show number and distribution of eyes H, I stylets of individuals CB057_18_01 (H) and CB057_18_04 (I). Note the sculpted stylets, and the difference in basis shape (forked or rounded posteriorly). Abbreviations: cg — cerebral ganglion, pb — proboscis. Scale bars: 5 mm (A–C); 1 mm (D); 0.5 mm (E–G); 25 μm (H, I).

 
 
  Part of: Cherneva I, Ellison CI, Zattara EE, Norenburg JL, Schwartz ML, Junoy J, Maslakova SA (2023) Seven new species of Tetranemertes Chernyshev, 1992 (Monostilifera, Hoplonemertea, Nemertea) from the Caribbean Sea, western Pacific, and Arabian Sea, and revision of the genus. ZooKeys 1181: 167-200. https://doi.org/10.3897/zookeys.1181.109521