Carditella naviformis (Reeve, 1843)

Rosenfeld, Sebastian, Aldea, Cristian, Mansilla, Andres, Marambio, Johanna & Ojeda, Jaime, 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, pp. 49-100 : 74

Carditella naviformis (Reeve, 1843) Fig. 7G

Material examined.

13 spm (4 × 2 - 5 × 3.5 mm).

Synonymy.

See Güller and Zelaya (2013).

Remarks.

This species is very similar to Carditella tegulata (Reeve, 1843), which has a triangular contour, but its shell is equilateral, with a central umbo and straight upper and lower dorsal margins ( Zelaya 2009b). Accordingly, Smith (1881) distinguished the species due to the presence of 14-15 radial ribs and a central umbo. However, the specimens revised by Reid and Osorio (2000) had a corresponding sculpture to Carditella naviformis , but the radial ribs were slightly pronounced from 11 to 13 in number, and the margins of the shell were more similar to Carditella tegulata .

Distribution.

WTSP: Iquique and Tocopilla ( Soot-Ryen 1959), and Valparaíso ( Hupé 1854, Dall 1903, Ramorino 1968, Güller and Zelaya 2013). Magellanic: Gulf of Ancud, Comau Fjord and Gulf of Corcovado ( Güller and Zelaya 2013), Darwin Channel ( Güller and Zelaya 2013), and Estero Elefantes ( Reid and Osorio 2000); Strait of Magellan ( Carcelles and Williamson 1951, USNM 2010): Carlos III Island ( Aldea et al. 2011a) and Punta Santa María (this record); Cockburn Channel ( Güller and Zelaya 2013), Beagle Channel ( Güller and Zelaya 2013), and Cape Horn ( USNM 2010); Malvinas/Falkland Islands ( Melvill and Standen 1914), Staten Island ( USNM 2010, Güller and Zelaya 2013), and Le Maire Strait ( USNM 2010).