Jerrybuccinum Kantor & Pastorino, 2009

Fraussen, Koen, Sellanes, Javier & Stahlschmidt, Peter, 2014, The South American radiation of Jerrybuccinum (Gastropoda, Buccinidae), with a new deep-water species from Chile, ZooKeys 409, pp. 61-70 : 62-63

Genus Jerrybuccinum Kantor & Pastorino, 2009

Type species.

Jerrybuccinum malvinense Kantor & Pastorino, 2009 (type locality: Falkland Islands (Islas Malvinas), 52°00'S, 56°36'W, R/V Eltanin cruise 7 st 558, 384-494 m).

Diagnosis.

Jerrybuccinum is characterised by a slender, fusiform shell with a high spire but a moderately long siphonal canal, a broad but blunt protoconch ornamented with fine spiral cords, a sculpture consisting of rather short, slightly bended axial ribs on the adapical part of the whorls and two or more accentuated spiral cords at the transition to the base. In most species ( Jerrybuccinum malvinense , the type species, Jerrybuccinum explorator and Jerrybuccinum species 1) the spiral cord delimitating the base forms a strong keel. This characteristic is subject to variation within the genus as the keel may be replaced by one or more weaker but slightly broader spiral cords ( Jerrybuccinum kantori sp. n. and Jerrybuccinum species 2).

The radula is characterised by a rectangular central tooth with slightly curved base and with one ( Kantor and Pastorino 2009) or two (present paper) small cusps and tricuspid lateral teeth with a long basal projection at the outer side.

Kryptos Jeffreys in Dautzenberg and Fischer 1896 (type species Kryptos elegans , Jeffreys in Dautzenberg and Fischer 1896 = Pleurotomella koehleri Locard, 1896) differs by the presence of axial sculpture on the protoconch (rather than only fine spiral cords), a broad interspace situated between the spiral cords along the periphery (rather than a spiral keel), carinated whorls (type species) or sculptured with sharp keels along the periphery ( Kryptos tholoides (Watson, 1882)), an operculum with terminal nucleus (rather than just falling within the margin) and a radula with a rectangular middle tooth without prominent cusps ( Bouchet and Warén 1985: fig. 487). Bouchet and Warén (1985: 196) noted that Kryptos koehleri lacks eyes.

Americominella Klappenbach & Ureta, 1972 (type species: Americominella duartei Klappenbach & Ureta, 1972, a senior synonym of Americominella longisetosus (Castellanos & Fernandez, 1972)) (= Echinosipho Kaiser, 1977, type species: Echinosipho aculeatum Kaiser, 1977 a senior synonym of Americominella duartei ) from the Patagonian continental shelf is somewhat similar in protoconch morphology but differs by the radula, which has a clearly tricuspid central tooth with longer cusps and a broader base.

Buccipagoda Ponder, 2010 (type species: Kapala kengrahami Ponder, 1982) from Australia has a radula with an identical central tooth, but which differs by the lateral teeth with one large outer cusp and more than 5 small inner cusps.

Antarctoneptunea Dell, 1972 (type species: Fusitriton aurora Hedley, 1916) from off Antarctica is similar in shape but differs in the absence of axial sculpture, in having a large papilliform protoconch, a radula with a tricuspid central tooth and a much larger adult size.

Prosipho Thiele, 1912 (type species: Prosipho gaussianus Thiele, 1912) is a rather heterogeneous group ( Engl 2012) mainly living near Antarctica, with slender shells ornamented with a dominant spiral sculpture. Some Jerrybuccinum , especially the smaller species without obvious axial sculpture like Jerrybuccinum species 2, may be confused with them. Prosipho differs by the smaller protoconch with smooth whorls, the axial sculpture that is usually absent or consisting of fine and sharp minute ridges that are straight (rather than broad and inclined ribs) and different radula morphology.

Included species.

Jerrybuccinum malvinense Kantor & Pastorino, 2009 (Falkland Plateau), type species;

Jerrybuccinum explorator new combination ( Fraussen and Sellanes 2008) (Chile);

Jerrybuccinum kantori new species (Chile);

Jerrybuccinum species 1 (Falkland Plateau);

Jerrybuccinum species 2 (Falkland Plateau).