Argeneuthria cerealis Rochebrune & Mabille 1885, new comb.

• Main Author: Pastorino, Guido
• Format: Text
• Language: unknown
• Published: Zenodo 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Gastropoda; Neogastropoda; Buccinidae; Argeneuthria; Argeneuthria cerealis; Southern Ocean; Blanco; Marambio; Ushuaia; Cape Horn; Gauthier; Guido; Aldea; Mansilla; Tierra del Fuego
• Online Access: https://dx.doi.org/10.5281/zenodo.5662403; https://zenodo.org/record/5662403

Argeneuthria cerealis (Rochebrune & Mabille, 1885) new comb. Figures 17 A–L, 18A–C Euthria cerealis Rochebrune & Mabille, 1885: 100. Euthria cerealis Rochebrune & Mabille, 1889: H.60, pl. 2, fig. 4. Paraeuthria cerialis (Roch. y Mab., 1891). Castellanos, 1992: 18, pl. 1 fig. 4; Linse, 2002: 102, figs. 9.1.1–97/101. Pareuthria cerealis (Rochebrune & Mabille, 1885). Rosenfeld et al, 2015: 72, fig. 6A. Type material. 29 spms., (MNHN 6844); 8 spms., (MNHN 6845); 10 spms., (MNHN 6846); 16 spms., (MNHN 6847); 14 spms., (MNHN 6848), all syntypes from Cape Horn Expedition. Type locality. “ Terre de Feu ”; in 1889 the authors mentioned “ Baie Orange ”, Lapataia in 21 to 198 m depth [Tierra del Fuego]. Description. Shell small, around 10 mm in height, fusiform, of six flat whorls; protoconch of 2 1/2 flat or very weakly convex whorls, entirely smooth, transition to teleoconch weakly defined; suture impressed; aperture elliptic, usually with sharp lip, siphonal canal deep, short. Parietal callus very thin, well defined. Growth lines, faint, closely spaced over the entire shell. Shell color reddish, brownish, outside and inside. Operculum (Fig. 17 E) shape elliptical, subterminal nucleus, attachment area surrounded by a thick rim. Radula (Figs 18 A–C) with tricuspid, rectangular rachidian teeth, all cusps of the same size; base of rachidian slightly curved; lateral teeth Prosipho- like with the basal plate produced into a typical “handle” more than half the width of the tooth, with 3 cusps, innermost smaller, two externals curved, pointing towards the rachidian, outermost, simple and smaller. Penis cylindrical, with a small papilla rising from a hole. Material examined. 12 spms., 47°43’45.6”S, 65°50’17.7”W, Puerto Deseado, 15 m depth, (MACN-In 40535); 45 spms., Cabo Blanco, Santa Cruz, (MACN-In 17842); 2 spms., Puerto Deseado, (MACN-In 35274); 1 spm., 10 Km north of Cabo Curioso, Santa Cruz, (MACN-In 35039); 1 shell, Puerto San Julián, off the old Frigorífico, Santa Cruz, (MACN-In 40536); 6 shells, Baie Orange, Beagle Canal, (from Rochebrune & Mabille’s Cape Horn Expedition), (MACN-In 13915); 20 spms., Puerto Cook, Staten Is., (MACN-In 33772); 1 shell, 53°54’S, 67°18’W, 27 m depth, (USNM 898313); 2 spms., 53°59’04.3”S, 67°22’59.1”W, Estancia Viamonte, Tierra del Fuego, live collected during low tide, (MACN-In 40535); 1 spm. 54°17.647”S, 66°15.376”W to 54°17.346”S, 66°15.531”W, 56 m depth, with bottom trawl, CAV2014, St. 22/48 (MACN-In 40533); 20 spms., Ushuaia, (MACN-In 40534); 3 spms., Becasses Is., Ushuaia, (MACN-In 35214). Distribution. Puerto San Julián, Santa Cruz to Ushuaia, Cape Horn, Tierra del Fuego and Staten Is. Remarks : This species is hard to find, perhaps because of its small size. It is similar to A. paessleri however, the shell is more slender and the aperture is smaller. A. cerealis lacks the distinctive spiral furrows at the base of the last whorl. : Published as part of Pastorino, Guido, 2016, Revision of the genera Pareuthria Strebel, 1905, Glypteuthria Strebel, 1905 and Meteuthria Thiele, 1912 (Gastropoda: Buccinulidae) with the description of three new genera and two new species from Southwestern Atlantic waters, pp. 301-344 in Zootaxa 4179 (3) on pages 326-328, DOI: 10.11646/zootaxa.4179.3.1, http://zenodo.org/record/256431 : {"references": ["Rochebrune, A. T. D. & Mabille, J. (1885) Diagnoses de mollusques nouveaux, recueillis par les membres de la mission du Cap Horn et M. Lebrun, Preparateur au Museum, charge d'une mission a Santa-Cruz de Patagonie. Bulletin de la Societe Philomathique de Paris, 7 (9), 100 - 111.", "Rochebrune, A. T. D. & Mabille, J. (1889) Mollusques, Mission Scientifique du Cap Horn. 1882 - 1883. Vol. 6. Zoologie 2. Gauthier-Villars et fils, Paris, 143 pp.", "Castellanos, Z. J. A. de (1992) Catalogo descriptivo de la malacofauna marina magallanica 7. Neogastropoda Columbellidae = Pyrenidae, Cominellidae y Fasciolariidae. Comision de Investigaciones Cientificas de la Provincia de Buenos Aires, La Plata, 41 pp.", "Linse, K. (2002) The shelled Magellanic Mollusca: with special reference to biogeographic relations in the Southern Ocean. Theses Zoologicae, 34, 1 - 252.", "Rosenfeld, S., Aldea, C., Mansilla, A., Marambio, J. & Ojeda, J. (2015) Richness, systematics, and distribution of molluscs associated with the macroalga Gigartina skottsbergii in the Strait of Magellan, Chile: A biogeographic affinity study. ZooKeys, 519, 49 - 100. http: // dx. doi. org / 10.3897 / zookeys. 519.9676"]}