Korean ctenostome bryozoans-observations on living colonies, new records, five new species, and an updated checklist Author Seo, Ji-Eun Author Chae, Hyun Sook Author Winston, Judith E. Author Zágoršek, Kamil Author Gordon, Dennis P. text Zootaxa 2018 2018-09-28 4486 3 251 283 journal article 29193 10.11646/zootaxa.4486.3.3 8bf7deb9-6336-4232-aa5f-cf6805630d2a 1175-5326 1453233 B87F5447-A747-4D96-8845-0B30B40412A3 Nolella cf. papuensis ( Busk, 1886 ) ( Fig. 8 ) Cylindroecium papuense Busk, 1886 : 38 , pl. 8, fig. 2. Nolella papuensis : Harmer 1915 : 53 , pl. 4, figs 10–20; Rho & Kim 1981 : 61 , pl. 4, figs 1, 2; Rho & Seo 1986 : 33 ; Seo 2005 : 283 , pl. 14, fig. 23 Material examined. MBRBK 1705 , 9 May 2017, Munseom Island offshore of Seogwipo Harbor , Jeju Island, 20 m . Description. Colony forming chain or network of narrow cylindrical zooids. Zooid tubes varying in length, straight to slightly curved, connected by very narrow stoloniform elongations; zooids brown, opaque, their cuticle covered by particles of sediment proximally ( Fig. 8A, B ), the distal ends of zooids usually lighter and more translucent ( Fig. 8D ), with fine annular rings and topped distally by the often-squared orifice ( Fig. 8E, F ). Mean zooid length 1.043 mm (range 0.97–1.09 mm , N = 3); zooid width, mean 0.186 mm (range 0.145–0.217, N = 3), no dilation in diameter at base. Tentacle crown equitentacled, tentacles thin, straightly held; the one tentacle crown that expanded in our study ( Fig. 8C ) had 12 tentacles. No evidence of reproduction in colonies found. Remarks. The muddy-looking cylindrical zooids of Nolella resemble tubes of polychaetes or amphipods, but their squared-off orifice is diagnostic, distinguishing them as belonging to Nolella . The zooids of the specimens collected in this study are shorter than the average for zooids of N. stipata recorded in Florida (2.1 x 1.8 mm zooid length and width) ( Winston 1982 ) and Brazil (2.3 x 1.8 mm ) ( Vieira et al . 2014 ). Korean material collected previously and identified as Nolella papuensis had zooids 1.0– 2.8 mm long and 0.20–0.30 mm wide ( Seo 2005 ). Harmer’s (1915) account of Nolella papuen sis from the Siboga Expedition reported considerable variability in zooid length depending on state of growth and/or regeneration, but able to attain almost 4 mm in height with a tentacle crown of c. 18 tentacles. Busk’s (1886) original description gave much smaller dimensions (1.3 x 0.10–0.11 mm ). We believe the Korean specimens (all three from the South Sea), most closely approach N. papuensis . Embryos were lacking in our material, but embryos in colonies from other areas are brooded, several in a row, in the distal half of zooid tubes. Distribution. Indonesia , New Guinea . Korea : Goheung, South Sea; Seogwipo, Jeju Island; intertidal to 20 m .