Sinetectula shepstonensis Fraussen & Vermeij 2021, gen. et comb. nov

Autor: Fraussen, Koen, Vermeij, Geerat J.
Rok vydání: 2021
Předmět:
DOI: 10.5281/zenodo.4770803
Popis: Sinetectula shepstonensis (Tomlin, 1926) gen. et comb. nov. Figs 8, 10S–T Pollia shepstonensis Tomlin, 1926: 291, pl. 16 fig. 4 (see Fig. 10S). Cantharus (Prodotia) shepstonensis – Cernohorsky 1975: 203, fig. 63. Prodotia shepstonensis – Kilburn et al. 2010: 52, unnumbered fig. Type locality “Beach End near Port Shepstone”. Material examined Holotype SOUTH AFRICA • 1 dd; Kwazulu-Natal Coast, Port Shepstone; NHM (UK) 1926.12.6.6 (see Fig. 10T). Other material OMAN • 3 lv; Mirbat; depth 30 m; J. Rosado leg.; Nov. 2016; KF 8048 (see Fig. 8A–B). SOMALIA • 1 dd; “Somalia”; KF 1627 • 2 dd; off Somalia, deep water; KF 2208 (see Fig. 8C–G). Distribution Sinetectula shepstonensis gen. et comb. nov. is known from South Africa in the south, along Somalia to Oman in the north. Remarks Sinetectula shepstonensis gen. et comb. nov. shares all characteristics with S. cinis gen. et comb. nov., apart from the presence of a labral denticle. Specimens from deep water (see Fig. 9C–G) are more slender, with a laterally more flattened spire very similar to S. cinis gen. et comb. nov.; shallow water specimens have slightly more convex whorls. One of the specimens has the apex in rather good condition without too much erosion and shows a conical, rather high, multispiral protoconch consisting of 3 whorls with a small tip. Sinetectula cinis gen. et comb. nov. is almost identical in sculpture but differs from S. shepstonensis gen. et comb. nov. in its rougher sculptured edge of the outer lip with a labral denticle, the slightly stronger spiral sculpture in combination with much weaker secondary spiral cords, the laterally weakly flattened whorls (instead of convex), the slightly stretched base (instead of constricted) resulting in a slightly broader siphonal canal and a much darker colour. Sinetectula nigricostata gen. et comb. nov. looks similar to but differs from S. shepstonensis gen. et comb. nov. in its slightly more convex whorls, the slightly finer spiral sculpture, the stronger axial ribs that are lower in number, the constricted base with longer siphonal canal and a much darker pattern consisting of fine spiral lines.
Published as part of Fraussen, Koen & Vermeij, Geerat J., 2021, Sinetectula gen. nov., a new genus of Pisaniidae (Gastropoda: Buccinoidea) from the tropical Indian and Pacific Oceans, pp. 155-176 in European Journal of Taxonomy 748 on pages 171-172, DOI: 10.5852/ejt.2021.748.1351, http://zenodo.org/record/4770238
{"references":["Tomlin J. R. le B. 1926. On South African marine Mollusca, with descriptions of new species. Annals of the Natal Museum 5 (3): 283 - 301.","Cernohorsky W. O. 1975. Supplementary notes on the taxonomy of buccinid species of the subfamily Pisaniinae (Mollusca: Gastropoda). Records of the Auckland Institute and Museum 12: 175 - 211.","Kilburn R. N., Marais J. P. & Fraussen K. 2010. Buccinidae. In: Marais A. P. & Seccoumbe A. D. (eds) Identification Guide to the Seashells of South Africa: 16 - 52. Centre for Molluscan Studies, Groenkloof."]}
Databáze: OpenAIRE
Externí odkaz: