SEM images of Marphysa setiuense sp. nov. Holotype UMTAnn 2177 (B, D–G), paratype AM W.54050 (A, C, H) A pectinate chaetae, chaetiger 30 B pectinate chaetae, chaetiger 77 C pectinate chaetae, chaetiger 203 D pectinate chaetae, chaetiger 77 E, F pectinate chaetae, chaetiger 136 G spiniger chaetae, chaetiger 25 H subacicular hook, chaetiger 183. Numbers denoted by arrows indicate the type of pectinate chaetae; 1. Thin, narrow isodont; 2. Thin, wide isodont; 7, 8. Thick, wide anodont. Scale bars: 5 µm (A–C); 10 µm (D–F); 20 µm (G, H).