Richness, systematics, and distribution of molluscs associated with the macroalga Gigartina skottsbergii in the Strait of Magellan, Chile: A biogeographic affinity study Author Rosenfeld, Sebastian Laboratorio de Macroalgas Antarticas y Subantarticas, Universidad de Magallanes, Casilla 113 - D, Punta Arenas, Chile & Instituto de Ecologia y Biodiversidad (IEB), Santiago Author Aldea, Cristian Laboratorio de Ecologia y Medio Ambiente, Instituto de la Patagonia, Universidad de Magallanes & Programa GAIA-Antartica, Universidad de Magallanes cristian.aldea@umag.cl Author Mansilla, Andres Laboratorio de Macroalgas Antarticas y Subantarticas, Universidad de Magallanes, Casilla 113 - D, Punta Arenas, Chile & Instituto de Ecologia y Biodiversidad (IEB), Santiago & Parque Etnobotanico Omora, Sede Puerto Williams, Universidad de Magallanes Author Marambio, Johanna Laboratorio de Macroalgas Antarticas y Subantarticas, Universidad de Magallanes, Casilla 113 - D, Punta Arenas, Chile Author Ojeda, Jaime Laboratorio de Macroalgas Antarticas y Subantarticas, Universidad de Magallanes, Casilla 113 - D, Punta Arenas, Chile & Instituto de Ecologia y Biodiversidad (IEB), Santiago & Parque Etnobotanico Omora, Sede Puerto Williams, Universidad de Magallanes text ZooKeys 2015 2015-08-31 519 49 100 http://dx.doi.org/10.3897/zookeys.519.9676 journal article http://dx.doi.org/10.3897/zookeys.519.9676 1313-2970-519-49 E6F1CD8274AD4DE59806B00AADC4771B FFCEFFC81C5BC028FF86FFA85720FF85 579018 Nacella deaurata (Gmelin, 1791) Fig. 4A-B Material examined. 66 spm (17 x 12 x 8 - 21 x 17 x 11 mm ). Synonymy. See Valdovinos and Rueth (2005) . Remarks. According to the classification done by Valdovinos and Rueth (2005) , the shell morphology of Nacella deaurata is similar to the species Nacella delicatissima . Later, Arazamendi et al. (2009) , based on molecular techniques, concluded that the specimens of Nacella delicatissima are combined with the specimens of Nacella magellanica and Nacella deaurata , suggesting that Nacella delicatissima is a morphotype of both species. Distribution. Magellanic: Apiao Archipelago ( Valdovinos and Rueth 2005 ), Estero Elefantes ( Reid and Osorio 2000 ), and Summer Island ( Valdovinos and Rueth 2005 ); Strait of Magellan ( Tryon and Pilsbry 1891 , Powell 1951 ): Buque Quemado ( Aldea and Rosenfeld 2011 ), eastern micro-basin of the Strait of Magellan ( Rios et al. 2003 ), Laredo Bay ( Mutschke et al. 1998 , Valdovinos and Rueth 2005 , Gonzalez-Wevar et al. 2010 ), Punta Santa Maria ( Valdovinos and Rueth 2005 ; this record), Punta Santa Ana ( Valdovinos and Rueth 2005 ), Aguila Bay ( Gonzalez-Wevar et al. 2010 ), Caleta Carden, Lenadura Beach, Punta Arenas and Punta Chilota ( Valdovinos and Rueth 2005 ), Dawson Island ( Ramirez 1996 , USNM 2010 ), and Carlos III Island ( Aldea et al. 2011a ); Beagle Channel and Ushuaia ( Aranzamendi et al. 2009 ), Puerto Williams ( Valdovinos and Rueth 2005 ), Robalo Bay ( Ojeda et al. 2010 ), Orange Bay and Hoste Island ( Valdovinos and Rueth 2005 ), Cape Horn ( Rochebrune and Mabille 1889 ), Diego Ramirez Islands ( Valdovinos and Rueth 2005 ) and Malvinas/Falkland Islands ( Gonzalez-Wevar et al. 2011 ). WTSA: from 38°S toward south ( Morris and Rosenberg 2005 ). SO: Kerguelen Islands ( Lamy 1905 , Carcelles 1950 ). Figure 4. A-B Nacella deaurata (17 x 12 x 8 mm) C-D Nacella flammea (45 x 33 x 10 mm) E-F Nacella mytilina (26 x 18 x 10 mm) G Iothia emarginuloides (4 x 2.3 x 1.5 mm) H Fissurella picta picta (19 x 16 x 10) I Fissurella oriens (43 x 32 x 16 mm) J Margarella violacea (9 x 9 mm) K Margarella expansa (7.5 x 8 mm).