Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10–19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A–E); 20 μm (F).