Daylithos amamiensis sp. nov. Holotype (NSMT-Pol H-907). A. Whole body, lateral view (insert: posterior end of paratype); B. Anterior end, lateral view; C Prostomium, frontal view; D. Prostomium, lateral view; E. Notochaetae, chaetiger 12; F. Basal part of notochaeta; G. Neurohook, chaetiger 12; H. Middle part of neurohook. Scale bars: 10 mm (A, B); 2.5 mm (A (insert)); 2 mm (C, D); 200 μm (E); 100 μm (F); 200 μm (G); 100 μm (H). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip.