SEM images of Marphysa merchangensis sp. nov. Holotype UMTAnn 2149 (A, B, E, H), paratype AM W.54044 (C, D, F, G) A, B pectinate chaetae, chaetiger 10 C pectinate chaetae, chaetiger 164 D pectinate chaetae, chaetiger 245 E pectinate chaetae, chaetiger 250 F pectinate chaetae, chaetiger 265 G spiniger chaetae, chaetiger 10 H subacicular hook, chaetiger 128. Numbers denoted by arrows indicate the type of pectinate chaetae; 1. Thin, narrow isodont; 4, 5. Thick, wide isodont; 6. Thick, narrow anodont; 8. Thick, wide anodont. Scale bars: 5 µm (A–C, E); 10 µm (D, F, H); 50 µm (G).