Tetranemertes arabica sp. nov. and Tetranemertes paulayi sp. nov. from the Arabian Sea (Oman), and Tetranemertes sp. ETP001 from Eastern Tropical Pacific A–C Tetranemertes paulayi. Individual BOMAN-07013, holotype, external appearance in life (A), and head compressed under coverglass (B) to show number and arrangement of eyes, and cephalic furrow (arrowhead). Note orange blood vessels (inset, and white arrowheads). Individual BOMAN-08291, paratype (C), stylets, viewed through the body wall of an individual compressed under coverglass (hence the orange tinge), inset emphasizes sculpted stylets (individual BOMAN-08302) D–F Tetranemertes arabica. Individual BOMAN-09099, external appearance in life (D), proboscis armature (E). Inset on E shows sculpted stylets (individual BOMAN-08030). Individual BOMAN-08050, head compressed under coverslip to show arrangement of eyes (F). Note the pink tinge to the body wall and proboscis wall, and orangish cerebral ganglia G Tetranemertes sp. ETP001 from the Pacific coast of Panamá (individual SMPP0632). Scale bars: 3 mm (A); 0.2 mm (B, F); 50 μm (C and insets on C, E); 100 μm (E); 2 mm (D); 0.5 mm (G).

 
 
  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