Two new species of Marphysa Quatrefages, 1865 (Polychaeta: Eunicida: Eunicidae) from northern coast of China and redescription for Marphysa orientalis Treadwell, 1936 Author Liu, Yubin Author Hutchings, Pat Author Kupriyanova, Elena text Zootaxa 2018 2018-02-01 4377 2 191 215 journal article 30866 10.11646/zootaxa.4377.2.3 5cb64c13-76bb-45f3-9a12-c2413c64c537 1175-5326 1163893 B1EFF160-FD26-4A18-A274-4E605EEEEE2F Key to species of Marphysa currently accepted as occurring in China (following Liu et al. 2017 and Glasby et al. 2016 ) 1 Margins of prostomium rounded margins, without sulcus............................. Marphysa sinensis Monro, 1934 - Margins of prostomium rounded, with median sulcus......................................................... 2 2(1) Two types of compound chaetae present, falcigers and spinigers................................................. 3 - Only compound spinigers present......................................................................... 4 3(2) Pectinate chaetae start from chaetiger 3.......................................... Marphysa maxidenticulata n. sp. - Pectinate chaetae start from chaetiger 193..................................... Marphysa orientalis Treadwell, 1936 4(2) Compound spinigers present along entire body.............................. Marphysa digitibranchia Hoagland, 1921 - Compound spinigers restricted to posterior chaetigers......................................................... 5 5(4) Three types of pectinate chaetae present.................................................................... 6 - Two or four types of pectinate chaetae present............................................................... 7 6(5) Pectinate chaetae from first few chaetigers, branchiae with up to 5 filaments present from chaetigers 29–36.................................................................................................. Marphysa bulla n. sp. - Pectinate chaetae present from chaetiger 20, branchaie with 2–3 filaments present from chaetigers 16–26.......................................................................... Marphysa tribranchiata Liu, Hutchings & Sun, 2017 7 (4) Two types of pectinate chaetae present from anterior chaetigers, 6–8 branchial filaments per chaetiger............................................................................... Marphysa tripectinata Liu, Hutchings & Sun, 2017 - Four types of pectinate chaetae present from chaetiger 70, 3–5 branchial filaments per chaetiger.................................................................................. Marphysa multipectinata Liu, Hutchings & Sun, 2017