Lagis bocki ( Hessle, 1917 )

Zhang, Jinghuai, Hutchings, Pat & Qiu, Jian-Wen, 2022, Pectinariidae (Annelida, Polychaeta) from the coastal waters of China, with description of new species and new records, Zootaxa 5151 (1), pp. 1-74 : 20-33

Lagis bocki ( Hessle, 1917)

Figs 9–15

Pectinaria bocki Hessle, 1917: 39–258 , Table I Figs 2–3 & Textfig. 4 in Hessle (1917).

Lagis bocki ( Hessle, 1917) : 433–445, Figs 4–5 in Nishi et al. (2014).

Material examined. Bohai Sea: TIO908 SPRST01 LDW032, 1 spec. complete, Bohai Sea, 121°42'10.0"E 40°10'26.0"N, 22 m, muddy sand, coll. Beihai Branch of State Oceanic Administration, China Marine Monitoring Vessel 17, Apr 2007, sta. LDW032. TIO908 SUMST01 BDH042, 2 specs complete, Bohai Sea , 120°37'27.0"E 40°08'03.0"N, 21.8 m, sand, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Aug 2006, sta. BDH042. TIO908 SUMST01 BDH049, 1 spec. complete, Bohai Sea , 120°25'14.0"E 40°02'38.0"N, 15.1 m, silt, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Aug 2006, sta. BDH049. TIO908 WINST01 BDH044, 1 spec. complete, Bohai Sea , 120°51'55.0"E 40°01'25.0"N, 30 m, mud, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Dec 2006, sta. BDH044. TIO908 AUTST01 BDH047, 2 specs complete, Bohai Sea , 120°37'34.0"E 39°53'57.0"N, 31 m, mud, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Oct 2007, sta. BDH047. TIO- 908 AUTST01 BH006, 1 spec. complete, Bohai Sea , 121°06'03.0"E 39°42'00.0"N, 29 m, muddy sand, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Oct 2007, sta. BH006. TIO- 908 SPRST01 BH008, 1 spec. complete, Bohai Sea , 120°42'14.0"E 39°42'00.0"N, 31 m, mud, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Apr 2007, sta.BH008.TIO908 SPRST01 BDH063, 1 spec. complete, Bohai Sea , 119°35'51.0"E 39°41'27.0"N, 12 m, muddy sand, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Apr 2007, sta. BDH063. TIO908 WINST01 BDH063, 2 specs complete, Bohai Sea , 119°35'51.0"E 39°41'27.0"N, 12 m, sand, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Dec 2006, sta. BDH063. TIO908 SUMST01 BDH062, 1 spec. complete, Bohai Sea , 119°42'31.0"E 39°36'42.0"N, 19.1 m, muddy sand, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Aug 2006, sta. BDH062.TIO908 SPRST01 BDH066, 1 spec. complete, Bohai Sea , 119°26'47.0"E 39°21'31.0"N, 18 m, muddy sand, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Apr 2007, sta. BDH066. TIO908 AUTST01 BDH067, 4 specs complete, Bohai Sea , 119°34'20.0"E 39°15'59.0"N, 20 m, mud, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Oct 2007, sta. BDH067. Yellow Sea : TIO908 SPRST02 C902, 3 specs complete, northern Yellow Sea , 122°30'16.5"E 39°11'10.5"N, 18 m, muddy sand, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C902. TIO908 WINST02 C902, 3 specs 2 complete and 1 posteriorly incomplete, Yellow Sea , Shandong Province, 122°30'15.0"E 39°10'59.0"N, 19 m, mud, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C902. TIO908 AUTST02 C902, 1 spec. complete, northern Yellow Sea , 122°30'22.9"E 39°10'50.4"N, 18.3 m, mud, coll. study group of benthos, Ocean University of China, Oct 2007, sta. C902. TIO- 908 SPRST02 C801, 1 spec. complete, northern Yellow Sea , 122°13'20.2"E 39°08'09.4"N, 15 m, muddy sand, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C801. TIO908 SUMST02 C801, 1 spec. complete, northern Yellow Sea , 122°17'60.0"E 39°04'19.7"N, 26 m, mud, coll. study group of benthos, Ocean University of China, Jul 2006, sta. C801. TIO908 SPRST02 C903, 1 spec. complete, northern Yellow Sea , 122°37'07.6"E 39°04'23.0"N, 37 m, silt, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C903. TIO- 908 AUTST02 C903, 1 spec. complete, northern Yellow Sea , 122°36'37.0"E 39°03'44.3"N, 37.2 m, mud, coll. study group of benthos, Ocean University of China, Oct 2007, sta. C903. TIO908 AUTST01 BH021, 4 specs complete, Bohai Sea , 121°00'00.0"E 39°00'00.0"N, 36 m, mud, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Oct 2007, sta. BH021. TIO908 AUTST02 A508, 2 specs complete, northern Yellow Sea , 123°00'00.7"E 38°59'48.5"N, 29 m, silt, coll. study group of benthos, Ocean University of China, Oct 2007, sta. A508. TIO908 WINST02 C904, 2 spec complete, northern Yellow Sea , 122°44'52.0"E 38°58'33.0"N, 44 m, silt, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C904. TIO908 SPRST02 C701, 1 spec. complete, but with distorted body, Yellow Sea , Shandong Province, 122°06'13.1"E 38°58'47.3"N, 26 m, mud, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C701. TIO908 AUTST02 C701, 1 spec. posteriorly incomplete and with distorted body, the northern Yellow Sea , 122°06'29.5"E 38°58'05.3"N, 27 m, mud, coll. study group of benthos, Ocean University of China, Oct 2007, sta. C701. TIO908 SPRST02 C803, 12 specs (1 photographed), 10 complete and 2 posteriorly incomplete, Yellow Sea , Shandong Province, 122°26'43.1"E 38°56'52.9"N, 45 m, mud, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C803. TIO908 AUTST02 C803, 2 specs complete, northern Yellow Sea , 122°26'10.7"E 38°56'28.7"N, 44 m, mud, coll. study group of benthos, Ocean University of China, Oct 2007, sta. C803. TIO908 SUMST02 C803, 3 specs complete, but 1 with severely distorted body, Yellow Sea , Shandong Province, 122°25'39.8"E 38°56'28.1"N, 45 m, mud, coll. study group of benthos, Ocean University of China, Jul 2006, sta. C803. TIO908 SUMST02 B702, 6 specs 5 complete and 1 posteriorly incomplete, Yellow Sea , Shandong Province, 122°10'04.3"E 38°54'44.3"N, 47 m, mud, coll. study group of benthos, Ocean University of China, Jul 2006, sta. B702. TIO908 SUMST02 C702, 1 spec. complete, but with distorted body, Yellow Sea , Shandong Province, 122°10'04.3"E 38°54'44.3"N, 47 m, mud, coll. study group of benthos, Ocean University of China, Jul 2006, sta. C702. TIO908 SUMST02 C702-01, 1 spec. complete, northern Yellow Sea , 122°10'04.3"E 38°54'44.3"N, 47 m, mud, coll. study group of benthos, Ocean University of China, Jul 2006, sta. C702. TIO908 AUTST02 C702, 2 specs complete, northern Yellow Sea , 122°10'17.0"E 38°54'40.4"N, 47 m, mud, coll. study group of benthos, Ocean University of China, Oct 2007, sta. C702. TIO908 SUMST02 C601, 3 specs 2 complete and 1 with distorted body, Yellow Sea , Shandong Province, 121°55'09.8"E 38°53'01.8"N, 35 m, mud, coll. study group of benthos, Ocean University of China, Jul 2006, sta. C601. TIO908 WINST02 C601, 5 specs complete northern Yellow Sea , 121°55'08.0"E 38°53'55.0"N, 39 m, mud, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C601. TIO908 SPRST02 C804, 3 specs 2 complete and 1 posteriorly incomplete, Yellow Sea , Shandong Province, 122°32'30.2"E 38°51'30.9"N, 51 m, mud, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C804. TIO908 WINST02 C804, 1 spec. complete, Yellow Sea , Shandong Province, 122°32'42.0"E 38°51'15.0"N, 50 m, mud, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C804. TIO908 AUTST02 C905, 4 specs complete, northern Yellow Sea , 122°55'22.5"E 38°50'41.6"N, 50 m, silt, coll. study group of benthos, Ocean University of China, Oct 2007, sta. C905. TIO908 WINST02 C905, 2 specs complete, northern Yellow Sea , 122°55'07.0"E 38°51'02.0"N, 50 m, muddy sand, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C905. TIO908 SUMST02 C703, 1 spec. complete, northern Yellow Sea , 122°16'19.6"E 38°49'10.0"N, 50 m, mud, coll. study group of benthos, Ocean University of China, Jul 2006, sta. C703. TIO908 AUTST02 C703, 2 specs complete, northern Yellow Sea , 122°16'19.9"E 38°46'22.2"N, 54 m, mud, coll. study group of benthos, Ocean University of China, Oct 2007, sta. C703. TIO908 SUMST02 C501, 1 spec. posteriorly incomplete and with distorted body, the northern Yellow Sea , 121°42'44.6"E 38°48'18.2"N, 50 m, muddy sand, coll. study group of benthos, Ocean University of China, Jul 2006, sta. C501. TIO908 SPRST02 C502, 3 specs complete, northern Yellow Sea , 121°47'26.1"E 38°46'34.8"N, 57 m, muddy sand, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C502. TIO908 AUTST02 C502, 2 specs complete, northern Yellow Sea , 121°47'29.4"E 38°46'37.3"N, 54 m, mud, coll. study group of benthos, Ocean University of China, Oct 2007, sta. C502. TIO908 WINST02 A507, 1 spec. complete, Yellow Sea , Shandong Province, 123°00'05.0"E 38°45'21.0"N, m, mud, coll. study group of benthos, Ocean University of China, Jan 2007, sta. A507. TIO908 WINST02 C704, 1 spec. complete, northern Yellow Sea , 122°22'30.0"E 38°41'38.0"N, 54 m, mud, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C704. TIO908 WINST02 C503, 1 spec. complete, Yellow Sea , Shandong Province, 121°51'44.0"E 38°41'25.0"N, 51 m, muddy sand, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C503. TIO908 WINST02 C104, 11 specs complete, Yellow Sea , Shandong Province, 121°10'18.0"E 38°39'52.0"N, 61 m, muddy sand, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C104. TIO908 WINST02 C402, 1 spec. complete, but with severely distorted body, northern Yellow Sea , 121°33'58.0"E 38°39'31.0"N, 66 m, sand, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C402. TIO- 908 SPRST02 C806, 1 spec. complete, northern Yellow Sea , 122°49'32.9"E 38°37'05.6"N, 58 m, mud, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C806. TIO908 WINST02 C806, 1 spec. complete, northern Yellow Sea , 122°49'41.0"E 38°37'05.0"N, 56 m, mud, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C806.TIO908 SPRST02 C302, 1spec. complete, Yellow Sea , Shandong Province, 121°21'29.8"E 38°36'37.8"N, 70 m, muddy sand, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C302. TIO908 SUMST02 C705, 1 spec. complete (mounted for SEM), northern Yellow Sea , 122°25'11.1"E 38°35'18.0"N, 55 m, mud, coll. study group of benthos, Ocean University of China, Jul 2006, sta. C705. TIO908 SUMST02 C504, 1 spec. complete, but with distorted body, Yellow Sea, Shandong Province, 121°54'53.6"E 38°34'57.0"N, 49 m, muddy sand, coll. study group of benthos, Ocean University of China, Jul 2006, sta. C504. TIO908 WINST02 C504, 1 spec. complete, northern Yellow Sea , 121°55'14.0"E 38°34'21.0"N, 50 m, mud, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C504. TIO908 SPRST02 C604, 1 spec. complete, northern Yellow Sea , 122°11'49.0"E 38°32'31.9"N, 55 m, muddy sand, coll. study group of benthos, Ocean University of China, May 2007, sta. C604. TIO908 SPRST01 BH032, 1 spec. complete, Bohai Sea, 120°30'00.0"E 38°30'00.0"N, 27 m, silt, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Apr 2007, sta. BH032. TIO908 SPRST01 BH034, 1 spec. complete, Bohai Sea, 121°00'00.0"E 38°30'00.0"N, 44 m, muddy sand, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Apr 2007, sta. BH034. TIO- 908 SUMST01 BH034, 1 spec. complete, Bohai Sea, 121°00'00.0"E 38°30'00.0"N, 45 m, muddy sand, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Jul 2006, sta. BH034. TIO908 W- INST01 BH034 , 6 specs complete, Bohai Sea, 121°00'00.0"E 38°30'00.0"N, 44 m, muddy sand, coll. Beihai Branch of State Oceanic Administration , Jan 2007, sta. BH034. TIO908 WINST01 BH030, 1 spec. complete, Bohai Sea, 120°00'00.0"E 38°30'00.0"N, 26 m, mud, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Jan 2007, sta. BH030. TIO908 SPRST02 C203, 4 specs complete, northern Yellow Sea , 121°13'33.7"E 38°27'02.0"N, 54 m, mud, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C203. TIO908 WINST02 C203, 2 specs complete, northern Yellow Sea , 121°14'09.0"E 38°27'02.0"N, 31 m, sand, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C203. TIO908 WINST02 C304, 5 specs 4 complete and 1 posteriorly incomplete, Yellow Sea, Shandong Province, 121°26'27.0"E 38°23'42.0"N, 52 m, muddy sand, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C304. TIO908 SPRST02 C104, 1 spec. complete, Yellow Sea, Shandong Province, 121°05'43.9"E 38°23'36.2"N, 57 m, muddy sand, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C104. TIO908 SPRST02 C405, 5 specs complete, but 2 with distorted bodies, northern Yellow Sea , 121°44'19.4"E 38°18'56.5"N, 49 m, mud, coll. study group of benthos, Ocean University of China, May 2007, sta. C405. TIO908 WINST02 C405, 11 specs complete, but 6 with severely distorted bodies, the northern Yellow Sea , 121°44'14.0"E 38°19'09.0"N, 50 m, mud, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C405. TIO908 SPRST02 C204, 3 specs 2 complete and 1 posteriorly incomplete, northern Yellow Sea , 121°15'50.0"E 38°17'59.7"N, 47 m, muddy sand, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C204. TIO908 AUTST02 C305, 15 specs complete (2 mounted for SEM), northern Yellow Sea , 121°29'52.8"E 38°17'43.1"N, 48 m, muddy sand, coll. study group of benthos, Ocean University of China, Oct 2007, sta. C305. TIO908 WINST02 C305, 8 specs 7 complete and 1 posteriorly incomplete, Yellow Sea, Shandong Province, 121°29'57.0"E 38°17'49.0"N, 31 m, muddy sand, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C305. TIO908 AUTST02 C707, 3 specs complete, northern Yellow Sea , 122°47'17.1"E 38°17'02.7"N, 41 m, mud, coll. study group of benthos, Ocean University of China, Oct 2007, sta. C707. TIO- 908 AUTST01 C105, 8 specs complete, Bohai Sea, 120°02'56.0"E 38°15'10.0"N, 29 m, muddy sand, coll. Beihai Branch of State Oceanic Administration , China Marine Monitoring Vessel 17, Oct 2007, sta. C105. TIO908 W- INST02 C105 , 5 specs complete, northern Yellow Sea , 121°03'16.0"E 38°14'59.0"N, 29 m, muddy sand, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C105. TIO908 SPRST02 C106, 3 specs complete, Yellow Sea, Shandong Province, 121°00'58.0"E 38°07'23.6"N, 27 m, mud, coll. study group of benthos, Ocean University of China, Apr 2007, sta. C106. TIO908 WINST02 C106, 2 specs complete, but 1 with severely distorted body, northern Yellow Sea , 121°00'47.0"E 38°07'18.0"N, 25 m, mud, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C106. TIO908 AUTST02 A204, 7 specs 6 complete, 1 posteriorly incomplete and distorted, northern Yellow Sea , 121°30'05.0"E 38°05'55.0"N, 38 m, muddy sand, coll. study group of benthos, Ocean University of China, Oct 2007, sta. A204. TIO908 AUTST02 A104, 6 specs complete, northern Yellow Sea , 121°15'48.5"E 38°05'54.7"N, 31.6 m, mud, coll. study group of benthos, Ocean University of China, Oct 2007, sta. A104. TIO- 908 WINST02 C1006, 2 specs complete, northern Yellow Sea , 122°59'58.0"E 38°00'04.0"N, 63 m, silt, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C1006. TIO908 WINST02 C508, 3 specs 2 complete and 1 posteriorly incomplete, northern Yellow Sea , 122°18'23.0"E 37°57'31.0"N, 48 m, mud, coll. study group of benthos, Ocean University of China, Jan 2007, sta. C508. TIO908 SPRST02 A203, 2 specs complete, northern Yellow Sea , 121°29'57.8"E 37°54'20.8"N, 26 m, muddy sand, coll. study group of benthos, Ocean University of China, Apr 2007, sta. A203. TIO908 SUMST02 A203, 7 specs complete, northern Yellow Sea , 121°30'23.4"E 37°54'19.3"N, 24 m, mud, coll. study group of benthos, Ocean University of China, Jul 2006, sta. A203. TIO908 AUTST02 A203, 13 specs complete, northern Yellow Sea , 121°30'00.1"E 37°54'22.2"N, 24 m, muddy sand, coll. study group of benthos, Ocean University of China, Oct 2007, sta. A203. TIO908 WINST02 A203, 2 specs complete, but with distorted bodies, Yellow Sea, Shandong Province, 121°30'00.0"E 37°54'16.0"N, 24 m, sand, coll. study group of benthos, Ocean University of China, Jan 2007, sta. A203. TIO908 AUTST02 A403, 1 spec. complete, northern Yellow Sea , 122°00'00.5"E 37°53'59.9"N, 39 m, mud, coll. study group of benthos, Ocean University of China, Oct 2007, sta. A403. TIO908 AUTST02 A303, 7 specs complete, northern Yellow Sea , 121°45'08.9"E 37°53'20.2"N, 31 m, muddy sand, coll. study group of benthos, Ocean University of China, Oct 2007, sta. A303. TIO908 SUMST02 C506, 3 specs 2 complete and 1 posteriorly incomplete, northern Yellow Sea , 122°06'00.6"E 38°18'03.8"N, 57 m, mud, coll. study group of benthos, Ocean University of China, Jul 2006, sta. C506. TIO908 SPRST02 C509, 2 specs complete, northern Yellow Sea , 122°23'40.9"E 37°48'32.5"N, 38 m, mud, coll. study group of benthos, Ocean University of China, May 2007, sta. C509. TIO908 AUTST02 C509, 1 spec. complete, northern Yellow Sea , 122°23'41.2"E 37°48'38.5"N, 36 m, mud, coll. study group of benthos, Ocean University of China, Oct 2007, sta. C509. TIO- 908 SUMST02 A302, 1 spec. complete, but with distorted body, northern Yellow Sea , 121°44'58.3"E 37°44'47.5"N, 22 m, sand, coll. study group of benthos, Ocean University of China, Jul 2006, sta. A302. TIO908 SUMST02 A402, 1 spec. complete, northern Yellow Sea , 121°59'57.5"E 37°44'49.4"N, 23 m, mud, coll. study group of benthos, Ocean University of China, Jul 2006, sta. A402. TIO908 AUTST02 A402, 9 specs complete, northern Yellow Sea , 121°59'58.3"E 37°44'44.0"N, 23 m, muddy sand, coll. study group of benthos, Ocean University of China, Oct 2007, sta. A402. TIO908 SUMST02 C510, 8 specs, 2 complete with distorted bodies and 6 posteriorly incomplete, northern Yellow Sea , 122°30'51.2"E 37°42'03.3"N, 30 m, sand, coll. study group of benthos, Ocean University of China, Jul 2006, sta. C510. TIO908 WINST02 B203, 1 spec. complete, northern Yellow Sea , 122°59'42.0"E 37°27'12.0"N, 42 m, mud, coll. study group of benthos, Ocean University of China, Jan 2007, sta. B203. TIO- 908 SPRST02 B102, 1 spec. complete, northern Yellow Sea , 122°41'55.0"E 36°59'53.4"N, 35 m, mud, coll. study group of benthos, Ocean University of China, May 2007, sta. B102. TIO908 SUMST02 B102, 1 spec. complete, Yellow Sea, Shandong Province, 122°44'33.3"E 36°59'59.6"N, 32 m, sand, coll. study group of benthos, Ocean University of China, Aug 2006, sta. B102. TIO908 WINST02 B102, 1 spec. complete, northern Yellow Sea , 122°41'56.0"E 36°59'54.0"N, 40 m, mud, coll. study group of benthos, Ocean University of China, Jan 2007, sta. B102. SC- SMBC030873 (tissue sample sequenced), 1 spec. complete, distorted, northern Yellow Sea , 122°52'18.5"E 38°29'50.3"N, 58 m, silt, coll. P. Ni, X Zhong, B. Chou & L. He, Sep 2017, sta. B22. SCSMBC030874 (tissue sample sequenced), 1 spec. complete, Yellow Sea, Shandong Province, 122°44'25.1"E 38°13'12.0"N, 53 m, silt, coll. P. Ni, X Zhong, B. Chou & L. He, Dec 2017, sta. B23. SCSMBC030875, 2 specs complete (1 photographed), Chang Island , Shandong Province, 120°55'59.9"E 37°52'59.9"N, 22 m, muddy sand, coll. J. He & Y. Wang, Sep 2018, sta. DQ033. SCSMBC030876, 1 spec. posteriorly incomplete, northern Yellow Sea , 122°36'23.8"E 36°49'27.1"N, 39 m, silt, coll. P. Ni, X Zhong, B. Chou & L. He, Sep 2017, sta. B03. SCSMBC030879, SC- SMBC030877 , SCSMBC030878 , SCSMBC030879.04 (tissue sample sequenced), 4 specs complete, Yellow Sea, Shandong Province, 122°39'58.7"E 34°19'60.0"N, 56 m, silt, coll. P. Ni, X Zhong, B. Chou & L. He, Dec 2017, sta. H23 .

East China Sea: TIO908SPRFJMJK055, 1 spec. complete, Taiwan Strait, Fujian Privince, 120°07'30.0"E 25°52'48.0"N, 44 m, mud, coll. Third Ocean Institute, Ministry of Natural and Resources , Yanping 2, Apr 2007, sta. MJK055. TIO908SPRFJMJK562, 1 spec. complete, but with distorted body, Taiwan Strait , Fujian Privince , 120°00'00.0"E 25°37'19.2"N, 43 m, mud, coll. Third Ocean Institute, Ministry of Natural and Resources , Yanping 2, Apr 2007, sta. MJK562. TIO908 SPRST06 MJK576, 1 spec. complete, distorted, Taiwan Strait, Fujian Privince, 119°45'00.8"E 25°04'01.7"N, 51 m, mud, coll. Third Ocean Institute, Ministry of Natural and Resources, Yanping 2, Apr 2007, sta. MJK576 .

South China Sea: SCSMBC030890, SCSMBC030891, SCSMBC030892, 3 specs complete, Daya Bay, northern South China Sea, Guangdong Province, 114°34'23.0"E 22°34'11.0"N, 15 m, mud, coll. J. Zhang, Apr 2008, sta. DS03. SCSMBC030887, 1 spec. posteriorly incomplete, Daya Bay , northern South China Sea , Guangdong Province, 114°32'31.0"E 22°34'42.0"N, 12 m, mud, coll. J. Zhang, Apr 2008, sta. DS02. SCSMBC030894 and SCSMBC030893, 2 specs 1 complete and 1 posteriorly incomplete, Daya Bay , northern South China Sea , Guangdong Province, 114°45'15.2"E 22°31'59.9"N, 17 m, mud, coll. J. Zhang, Apr 2008, sta. DS23. SCSMBC030880, 1 spec. complete, Daya Bay , northern South China Sea , Guangdong Province, 114°36'20.9"E 22°43'37.7"N, 5 m, mud, coll. J. Zhang, Apr 2008, sta. DS13. SCSMBC030881, 2 specs 1 complete and 1 posteriorly incomplete, Daya Bay , northern South China Sea , Guangdong Province, 114°40'19.2"E 22°40'30.0"N, 13 m, muddy sand, coll. J. Zhang, Y. Gao & K. Chen, Mar 2015, sta. D07. SCSMBC030882, SCSMBC030883, SCSMBC030884, 4 specs 3 complete and 1 posteriorly incomplete, Daya Bay , northern South China Sea , Guangdong Province, 114°33'10.8"E 22°35'34.8"N, 10 m, muddy sand, coll. J. Zhang, Y. Gao & K. Chen, Mar 2015, sta. D05. SCSMBC030885 and SCSMBC030886, 2 specs 1 complete (mounted for SEM) and 1 posteriorly incomplete, Daya Bay , northern South China Sea , Guangdong Province, 114°35'24.0"E 22°35'16.8"N, 13 m, muddy sand, coll. J. Zhang, Y. Gao & K. Chen, Mar 2015, sta. D04. SCSMBC030888, 1 spec. complete, Daya Bay , northern South China Sea , Guangdong Province, 114°41'02.4"E 22°34'40.8"N, 16 m, muddy sand, coll. J. Zhang, Y. Gao & K. Chen, Mar 2015, sta. D03. SCSMBC030896 (tissue sample sequenced), 1 spec. incomplete, Daya Bay , northern South China Sea , Guangdong Province, 114°41'02.4"E 22°34'40.8"N, 16 m, muddy sand, coll. J. Zhang & J. Pan, Aug 2020, sta. D03. SCSMBC030889, 1 spec. complete, Daya Bay , northern South China Sea , Guangdong Province, 114°31'04.8"E 22°34'30.0"N, 6 m, muddy sand, coll. J. Zhang, Y. Gao & K. Chen, Mar 2015, sta. D02. SCSMBC030895, 1 spec. complete, Daya Bay , northern South China Sea , Guangdong Province, 114°38'49.2"E 22°31'40.8"N, 18 m, muddy sand, coll. J. Zhang, Y. Gao & K. Chen, Mar 2015, sta. D01. TIO908 SPRST06 NH514, 1 spec. complete, South China Sea , 115°54'27.8"E 22°26'33.8"N, 40 m, muddy sand, coll. Third Ocean Institute, Ministry of Natural and Resources, Yanping 2, May 2007, sta. NH514 .

Additional material examined. AM W.45878, 1 spec., Minato-Mirai , Yokohama, Tokyo Bay, Japan, 35°28’N 139°28’E, coll. E. Nishi, 02 Jun 2011, identified as Lagis bocki ( Hessle, 1917) .

AM G.11372, 3 specs, Naples, Italy, identified as L. neapolitana (Claparede, 1868) .

Description. Preserved specimens range from pale to reddish or rose (stained with Rose Bengal to facilitate sorting of samples), body conical in shape ( Figs 10A–B ; 11A–B, E–F ; 12A–B ). Body length 2.1–26.0 mm including paleae and scaphe, width 0.4–5.5 mm at cephalic region.

Cephalic veil circular-arched, connected to opercular lateral margin at base of 1 st pair of tentacular cirri, with 5–28 smooth cirri on anterior margin ( Figs 10C–D ; 11G ; 12C, E ; 13A–C ; 15B ). Pair of lateral ear-shaped lobes adjacent to both sides of dorsal base of cephalic veil ( Figs 13A–B, D ; 15D ). Long buccal tentacles with wide longitudinal grooves, extending to margin of cephalic veil, arising posterior to cephalic veil ( Figs 10C–D ; 12B–E ; 13A–B ; 15B, E ).

Operculum semicircular; dorsal and lateral margins well developed, smooth; ventral margin (opercular ridge) with 9–15 pairs of golden paleae, curved dorsally, acute with extended tips ( Figs 10A–B ; 12 A–D ). Some specimens with small lappet in between rows of paleae ( Figs 12F ; 15C ).

First pair of tentacular cirri extending beyond tips of paleae, with annuli, arising from connection of opercular margin and paleal ridge ( Figs 10B–D ; 12C–E ; 13A–B ; 15B ). Pair of small ventral lappets present posterior to 1 st pair of tentacular cirri adjacent to ear-shaped lobes ( Figs 10D ; 13A–B, D ; 15B, D ).

Second pair of tentacular cirri extending beyond opercular margin, with annuli, on latero-median connecting ridge on segment 2, inserted more dorsally than 1 st pair ( Figs 10C ; 12D ). Segment 2 with ventral lobes as pair of ventro-lateral lobes and narrow mid-ventral lobe about 1/2 width of ventro-lateral lobes; ventro-lateral lobes with several continuous lappets, and separated by shallow grooves from base of 2 nd pair of tentacular cirri; mid-ventral lobe inserted more posteriorly than ventro-lateral lobes, covered by ventral lobe of segment 3 ( Figs 10D ; 13B ; 15B ). Segment 2 without dorsal lobe ( Figs 10D ; 11A, E ; 12D ).

Comb-like branchiae on segments 3–4, consisting of series of dense, flat lamellae ( Figs 14A–B ; 15B–C ; 16A– B ). Branchiae on segment 3 larger and inserted more ventrally than those on segment 4. Pair of small dorso-lateral glandular pads present adjacent to branchiae on segments 3–4 ( Figs 10C, E ; 11A, E ; 12D ). Dorso-lateral glandular pads broader on segment 3 than those on segment 4.

Distinct ventral glandular lobes present on segments 3–6, becoming progressively more lateral and broader on segments 3–5 ( Figs 10A, D ; 11B ; 12C ). Pair of lateral humps present near branchiae on segment 4 ( Figs 12D , 14D , 15A–B ). Segment 3 with pair of ventro-lateral lobes and a mid-ventral lobe, separated by broad and deep grooves; mid-ventral lobe almost same width as ventro-lateral lobes; ventral lobes curved anteriorly at mid-line. Segment 4 with pair of ventro-lateral lobes and mid-ventral lobe about 1/2 width of ventro-lateral lobes, separated by narrow and deep grooves. Segment 5 with pair of ventro-lateral lobes and mid-ventral lobe about 1/4 width of lateral lobes, separated by shallow grooves. Segment 6 with pair of broad ventro-lateral lobes and mid-ventral lobe about 1/2 width of ventro-lateral lobes, separated by shallow grooves ( Figs 10A, D ; 11B ).

Notopodia other than those of segment 1 which bear paleae, on segments 5–19 (15 pairs), each bearing two kinds of notochaetae arranged in two rows; anterior row, with winged chaetae bordered with serrations along distal portion, short, covered progressively with more spines from about middle to front of wing, on anterior surface; posterior row, chaetae long, stout, straight, tapering to an acute tip, covered progressively with more spines from midanterior portion to end, on anterior surface ( Figs 14A–C ; 15H ). Neuropodia, 12 pairs on segments 8–19, each with slightly raising torus with transverse row of uncini; each uncinus with U-shaped anterior peg embedded into torus, several rows of minor teeth, and 4–6 longitudinal rows of major teeth, each with 6–7 teeth ( Figs 14D–H ; 15I–L ). Segments 20–21 each with pair of lateral lobes without chaetae ( Figs 10F ; 11C–D, H ; 12H ; 15F ).

Scaphe ovoidal, flattened dorsally, divided into anterior almost equal five lobes and one small rounded lobe on each lateral margin ( Figs 10F–G ; 11C–D, H ; 12G–I ; 15F ). Anal flap oblong tongue-like, with crenulated latero-posterior and posterior margin, with longer lappets (cirri) on posterior margin, with short anal cirrus on median of dorsum of anal flap ( Figs 10G–H ; 11C–D, H ; 12J ; 15G ). Scaphal hooks 2–4 pairs, amber, hooked, curved dorsally, with pointed tips, arranged in two oblique rows on dorsal margin of scaphe ( Figs 10G ; 11C–D, H ; 12H–K ; 13E–F ).

Tube not collected.

Methyl Green stained body distinctly green on cirri of cephalic veil, rims of operculum, ventral lobes of segments 2–6, base of 2 nd pair of tentacular cirri, dorso-lateral pads of segments 3–4, lateral lobes on segments 20–21, and ventro-lateral or ventral regions on scaphe, dorsum of anal flap ( Figs 10–11 ).

Distribution. Bohai Sea, Yellow Sea, southern East China Sea and northern East China Sea ( Fig. 9 ), Japan.

Habitat. Found in mud or muddy sands from 5.0 m to 80.5 m depth.

Remarks. These specimens can be identified as Lagis bocki by the following characters: cephalic veil connect- ed to 1 st pair of tentacular cirri; opercular margins smooth; branchiae present on segments 3–4; capillary notochaetae on segments 5–19; neurochaetae (uncini) on segments 8–19; 4–6 longitudinal rows of major teeth on uncinus; scaphal flap with crenulated latero-posterior and posterior margin, and longer lappets (cirri) on posterior margin; anal cirrus present, and relatively few pairs of scaphal hooks (2–4 pairs). The number of paleae, cirri on opercular rim, cirri on cephalic veil, and scaphal hooks of L. bocki from the coastal waters of China all increase with the size of body, with significant positive correlations ( Fig. 16 ). Numbers of pairs of scaphal hooks vary from 2–4 depending on body size. It is questionable that the type species L. koreni described from Norway was also recorded in the coastal waters of China ( Yang & Sun 1988). We did not find any specimens of L. koreni amongst all the material collected from the coast of China, and this was confirmed by molecular studies ( Fig. 41 ). Lagis bocki is very similar to L. koreni , but they can be distinguished by longer cirri on margin of anal flap of specimens of L. bocki . Another species L. neapolitana the type locality of which is in Gulf of Naples, Mediterranean has also been recorded from China waters ( Sun et al. 2008; Lin & Zheng 2012), L. bocki is easily distinguished from L. neapolitana by the anal flap which in L. bocki has a crenulated margin, whereas L. neapolitana has smooth margin on anal flap, with several lobes on posterior margin from specimens checked in Australian Museum and we suggest that this species does not occur in Chinese waters. Lagis bocki can be easily distinguished from L. crenulatus Sun & Qiu, 2012 which is characterized by the cephalic veil free from operculum, with no branchiae on segments 3–4 and capillary notochaetae on segments 8–20.

Genus Pectinaria Lamarck, 1818

Type species. Nereis cylindraria belgica Pallas, 1766 , designated by Hartman (1959)

Type locality. Bohuslan , Sweden

Diagnosis. Cephalic veil free from operculum, with numerous long cirri on rim. Dorsal and lateral margins of semicircular operculum smooth. Comb-like branchiae present on segments 3–4. Notopodia other than those of segment 1 which bear paleae, on segments 5–19, 20 or 21 (15–17 pairs), with capillary notochaetae. Neuropodia, 12–13 pairs, with transverse row of uncini, on segments 8–19 or 20. Uncinus with more than one longitudinal row of major teeth. Scaphe flattened dorsally, with anal flap and distinctly separate from posterior segments.

Remarks. Pectinaria can easily be distinguished from Lagis by having the cephalic veil free from the operculum, and from Amphictene by having smooth margins of operculum, and from Petta and Cistenides by having more than one longitudinal row of major teeth on uncinus. Though this genus is not supported by the result of phylogenic analysis ( Fig. 41 ), but as there is limited molecular data for this genus, we are following previous systematic studies (Zhang & Hutching, 2019), and as more data becomes available the genus can be revised. The four species Lagis abranchiata , L. crenulatus , L. plurihamus and L. pseudokoreni are proposed to be transferred into Pectinaria based on the cephalic veil being free from the operculum. Four species Pectinaria aegyptia ( Savigny, 1822) , P. antipoda Schmarda, 1861 , P. conchilega Grube, 1878 and P. papillosa Caullery, 1944 were previously recorded in Chinese waters ( Sun et al. 2008; Lin & Zheng 2012), but were not collected during this Study ( Figs 17 & 41 ), and we suggest are misidentifications.

Figures

FIGURE 2. Amphictene alata Zhang, Zhang & Qiu, 2015 Methyl Green stained body (SCSMBC030866): A. Dorso-lateral view of distorted entire body; B. Ventral view of distorted entire body; C. Dorsal view of anterior end; D. Lateral view of anterior end; E. Ventral view of posterior end; F. Lateral view of posterior end; G. Ventral view of posterior end; H. Dorsal view of posterior end; I. Scaphal hooks. Abbreviations: af, anal flap; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorsolateral pads; dls, dorsal lobe of scaphe; nep, neuropodium; noc, notopodial chaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet.

FIGURE 3. Relationship between body width and body length, number of pairs of paleae, number of cirri on cephalic veil, number of pairs of scaphal hooks, number of cirri on opercular rim, for Amphictene alata Zhang, Zhang & Qiu, 2015.

FIGURE 4. Amphictene jianqingi n. sp. Methyl Green stained body of Holotype (SCSMBC030870): A. Ventral view of entire body; B. Dorsal view of entire body; C. Dorsal view of anterior end; D. Ventral view of anterior end; E. Dorsal views of scaphe; F. Lateral view of posterior end; G. Anal flap; H. Dorsal views of posterior end; I. left hooks.Abbreviations: ac, anal cirrus; af, anal flap; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dcs, dorsal cirrus of scaphe; dlp, dorso-lateral pad; dls, dorsal lobe of scaphe; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri.

FIGURE 5. Amphictene jianqingi n. sp. Paratype (SCSMBC030871), under the SEM: A. Dorsal view of anterior end; B. Ventral view of anterior end; C. Left views from operculum to branchiae; D. Dorsal view of posterior end; E. Ventral view of scaphe; F. Lateral view of posterior end; G. Anal flap. Abbreviations: af, anal flap; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dcs, dorsal cirri of scaphe; dlp, dorso-lateral pad; nep, neuropodium; noc, notopodial chaetae; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri.

FIGURE 9. Map illustrating the distribution of Lagis bocki (Hessle, 1917) in the coastal waters of China

FIGURE 10. Lagis bocki (Hessle, 1917) Methyl Green stained body with Rose Bengal (SCSMBC030878): A. Ventral view of entire body; B. Dorsal view of entire body; C. Lateral view of anterior end; D. Ventral view of anterior end; E. Dorsal view of anterior end; F. Dorsal view of scaphe; G. Lateral view of posterior end; H. Anal flap. Abbreviations: ac, anal cirrus; af, anal flap; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pads; nep, neuropodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet.

FIGURE 11. Lagis bocki (Hessle, 1917) Methyl Green stained body. SCSMBC030875: A. Dorso-lateral view of entire body; B. Ventral view of entire body; C. Dorsal view of posterior end; D. Lateral view of posterior end TIO908SPRST02C803: E. Dorsal view of entire body; F. Lateral view of entire body; G. Connection between cephalic veil and tentacular cirri 1; H. Dorsal view of posterior end. Abbreviations: af, anal flap; br, branchiae; bt, buccal tentacles; cv, cephalic veil; nec, neurochaetae; nep, neuropodium; op, operculum; or, opercular rim; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri.

FIGURE 12. Lagis bocki (Hessle, 1917) from northern South China Sea (SCSMBC030885), under the SEM: A. Ventral view of entire body; B. Dorsal view of entire body; C. Ventral view of anterior end; D. Lateral view of anterior end; E. Close up of cephalic veil and buccal tentacles; F. Lappet between pair of rows of paleae; G. Ventral view of posterior end; H. Lateral view of posterior end; I. Dorsal view of posterior end; J. Dorsal view of anal flap; K. Scaphal hooks. Abbreviations: ac, anal cirrus; af, anal flap; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mpo, median papilla of operculum; nep, neuropodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri.

FIGURE 13. Lagis bocki (Hessle, 1917) from Yellow Sea (TIO908SUMST02C705), under the SEM: A. Ventral view of anterior end; B. Ventral view of anterior end with partial removal of buccal tentacles; C. Close up between cephalic veil and tentacular cirri I; D. Left ear-shaped lappet between buccal tentacles and segment 1; E. Scaphal hooks; F. Internal structure of scaphal hook. Abbreviations: bc, buccal cavity; br, branchiae; bt, buccal tentacles; cv, cephalic veil; lel, lateral ear-shaped lobe; s, segment; tc, tentacular cirri; vl, ventral lappet.

FIGURE 14. Lagis bocki (Hessle, 1917) from the northern South China Sea (SCSMBC030885), chaetae under the SEM: A. Notochaetae on segment 5; B–C. Close ups of notochaetae on segment 8; D. Median uncini of neuropodia on segment 17; E. Ventral uncini of neuropodia on segment 17; F. Dorsal uncini of neuropodia on segment 11; G. Median uncini of neuropodia on segment 11; H. Ventral uncini of neuropodia on segment 11.

FIGURE 15. Lagis bocki (Hessle, 1917) from Yellow Sea (TIO908SUMST02C705), under the SEM: A. Ventro-lateral view of entire body; B. Ventral view of anterior end; C. Lappet between pair of rows of paleae; D. Ear-shaped lobe between buccal tentacles and segment 1; E. Close up of buccal tentacle; F. Lateral view of posterior end; G. Anal flap; H. Notochaetae on segment 7; I. Dorsal uncini of neuropodia on segment 11; J. Median uncini of neuropodia on segment 11; K. Median uncini of neuropodia on segment 19; L. Ventral uncini of neuropodia on segment 19. Abbreviations: ac, anal cirrus; af, anal flap; an, anus; bt, buccal tentacles; cv, cephalic veil; lel, lateral ear-shaped lobe; mpo, median papilla of operculum; noc, notochaetae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet.

FIGURE 16. Relationship between body width and body length, number of cirri on cephalic veil, number of pairs of paleae, number of pairs of scaphal hooks, for Lagis bocki (Hessle, 1917).

FIGURE 17. Map illustrating the distribution of Pectinaria torquata Zhang & Qiu, 2017, P. dayaensis n. sp., P. lizhei n. sp. and P. xiukaii n. sp. in the coastal waters of China

FIGURE 41. Bayesian phylogenetic tree of the family Pectinariidae based on multigene sequences (COI, 16S rDNA, 18S rDNA, 28S rDNA and H3), including 13 species of pectinariids and two outgroups (one of the family Trichobranchidae, another of the family Arenicolidae). Numbers above nodes are posterior probabilities.