Taxonomy Of Amphinomidae And Orbiniidae(annelida: Polychaeta)from China Seas

Amphinomidae and Orbiniidae belong to Class Polychaeta,Phylum Annelida,they are common groups with high abundance,wordwide distribution,and diverse habitats,playing important role in marine ecosystem.They are very common in China seas.However,there are no systematical studies on taxonomy of them in China,except a few records of species.Our knowledge about their taxonomy and geographical distribution are still poor.Based on the historical materials deposited in the Marine Biological Museum of Chinese Academy of Sciences,including specimens collected recently,with traditional taxonomic methods,we carried out systematic studies on both two families.Twenty four amphinomid species belong to 9 genera are identified,including 3 new species and 5 new recorded species;19 orbiniid species belong to 6 genera are identified,including 8 new species and 1 newly recorded species.We provided detailed descriptions and illustrations,including keys to each genus and species.We summarized geographical distribution and habitats of each species.The study of the geographical distribution shows:(1)only 3 species of Amphinomidae distribute in the Bohai and Yellow Seas;7 species in the East China Sea;21 species in South China Sea,in which 8 species inhabit coral reefs in Guangxi Province,Hainan Island,Xisha Islands and Nansha Islands.A total of 16 species restrictedly distribute in the South China Sea and belong to typical warm water species.(2)2 species of Orbiniidae distribute in the Bohai Sea,11 species in the Yellow Sea,9 species in the East China Sea,12 species in the South China Sea.All species researched in this study as follows: those with one asterisk “*” are recorded for the first time from Chinese waters,“**” new species or genus.Family Amphinomidae Lamarck,1818 Amphinominae Lamarck,1818 1)Alleurythoe,Sun & Li,2017**1.Alleurythoe tenuichaeta Sun & Li,2017**2)Amphinome Bruguière,17892.Amphinome rostrata(Kinberg,1867)3.Amphinome nigrobranchiata Horst,1912*3)Cryptonome Borda,20124.Cryptonome cf.parvecarunculata(Horst,1912)4)Eurythoe Kinberg,18575.Eurythoe complanata(Pallas,1766)5)Linopherus Quatrefages,18656.Linopherus ambigua(Monro,1933)7.Linopherus beibuwanensis Sun & Li,2016**8.Linopherus canariensis Langerhans,1881*9.Linopherus hirsuta(Wesenberg–Lund,1949)10.Linopherus cf.minuta(Knox,1960)*11.Linopherus oligobranchia(Wu,Shen & Chen,1975)12.Linopherus spiralis(Wesenberg–Lund,1949)6)Pareurythoe Gustafson,193013.Pareurythoe borealis(M.Sars,1862)7)Pherecardia Horst,188614.Pherecardia striata(Kinberg,1857)Archinominae Kudenov,19918)Chloeia Lamarck,181815.Chloeia flava(Pallas,1766)16.Chloeia fusca McIntosh,188517.Chloeia parva Baird,186818.Chloeia violacea Horst,19109)Notopygos Grube,185019.Notopygos andrewsi Monro,1924*20.Notopygos gigas Horst,1911 21.Notopygos labiatus Mc Intosh,1885 * 22.Notopygos subpragigas Uschakov & Wu,196223.Notopygos xishaensis sp.n.**24.Notopygos sp.Orbiniidae Hartman,19421)Leitoscoloplos Day,1977 1.Letioscoloplos guangxinensis sp.n.**2.Letioscoloplos nanhaiensis sp.n.**2)Leodamas Kinberg,18663.Leodamas robusta sp.n.**4.Leodamas rubrus(Webster,1879)5.Leodamas sinensis sp.n.**6.Leodamas weiensis sp.n.**7.Leodamas sp.3)Naineris Blainviller,18288.Naineris dendritica(Kinberg,1867)9.Naineris hainanensis Wu,198410.Naineris laevigata(Grube,1855)4)Orbinia Quatrefages,186511.Orbinia wui Sun & Li,2018 **12.Orbinia dicrochaeta Wu,19625)Phylo Kinberg,186613.Phylo fimbriata(Moore,1903)*14.Phylo heterochaetus sp.n.**15.Phylo cf.kupfferi(Ehlers,1874)16.Phylo nudus(Moore,1911)17.Phylo sinensis sp.n.**6)Scoloplos Blainville,182818.Scoloplos armiger(Müller,1776)19.Scoloplos marsupialis(Southern,1921)...