Toroidia toroides (Hoffman, van Heugten & Lavaleye, 2011)

Ortega, José Rafael & Gofas, Serge, 2019, The unknown bathyal of the Canaries: new species and new records of deep-sea Mollusca, Zoosystema 41 (26), pp. 513-551 : 523

Toroidia toroides (Hoffman, van Heugten & Lavaleye, 2011)

( Fig. 7A )

MATERIAL EXAMINED. — 18 sh., DW130.

REMARKS

This is the first report of this species after its original description from off NW Morocco in 529 m. It was diagnosed by the occurrence of a spiral sculpture whereas the interspaces between ribs are smooth in the similar Margarites laminarum (Jeffreys, 1883) , described from off Portugal and reported from Ampère Seamount ( Beck et al. 2006). The original generic placement in Margarites was not tenable, and the new genus Toroidia was established by Hoffman & Freiwald (2018), but the family placement is tentative in the absence of data on the soft parts. New to Spanish waters.

Figures

FIG. 7. — A, Toroidia toroides (Hoffman, van Heugten & Lavaleye, 2011), shell from DW130 (height 2.6 mm); B, Rugulina fragilis (G. O. Sars, 1878), shell from DW130 (diameter 1.5 mm); C, D, Anekes paucistriata Warén, 1992: C, scanning electron micrograph of a shell from DW130 (height 1.3 mm); D, detail of the protoconch of another shell, same locality; E-G, Lissotesta gittenbergeri (van Aartsen & Bogi, 1988): E, G, scanning electron micrograph of shells from DW130 (height 0.67 mm and 0.62 mm); F, detail of the protoconch.