Sclerobregma nanhaiensis sp. nov. holotype A anterior 6 chaetigers in dorsal view B anterior 5 chaetigers in ventral view C acicular spine on notopodium of chaetiger 2 D lyrate chaetae E transitionary chaetae from neuropodium of chaetiger 2 F spinous chaetae from chaetiger 2. Scale bars: 500 μm (A, B); 100 μm (C, E); 20 μm (D); 25 μm (F).

 
 
  Part of: Lin J-H, Huang Y-Q, Liang Q-Y, He X-B (2025) A new species of a rarely encountered genus Sclerobregma Hartman, 1965 (Annelida, Scalibregmatidae) from the deep South China Sea. ZooKeys 1236: 209-218. https://doi.org/10.3897/zookeys.1236.149576