Collection sites of the specimens examined in the present study.

 
 
  Part of: Hookabe N, Kohtsuka H, Fujiwara Y, Tsuchida S, Ueshima R (2023) Three new species in Tetrastemma Ehrenberg, 1828 (Nemertea, Monostilifera) from sublittoral to upper bathyal zones of the northwestern Pacific. ZooKeys 1146: 135-146. https://doi.org/10.3897/zookeys.1146.95004