Alvania cancellata ( Da Costa, 1778 )

Oliver, Joan Daniel, Gofas, Serge, Urgorri, Victoriano, Díaz-Agras, Guillermo & Templado, José, 2022, Rissoidae gastropods of the outer continental shelf and slope off Galicia (NW Spain), Zootaxa 5196 (1), pp. 1-45 : 34

Alvania cancellata ( Da Costa, 1778)

( Fig. 21d )

Material examined. (3 juvenile shells in the same sample): SPAIN • 3 sh (juv); 42° 30.391′N, 009° 19.517′W to 42° 29.428′N, 009° 17.924′W; 147–148 m; 17–28 SeP. 2004; VERTIDOS AG-EBS-150.

Remarks. This species is known in northeastern Atlantic from the English Channel to Morocco, in sublittoral rocky bottoms ( Gofas & Oliver 2011). It is common in Azores, Madeira and Canary Islands and it has been only recorded in the seamounts whose summit is shallower (Gorringe and Ampere) ( Gofas 1990, 2007; Ávila & Malaquias 2003; Cordeiro & Ávila 2015). Only three juvenile shells have been found (from a single sample obtained at a depth of 150 m), one of them very eroded.

Figures

FIGURE 21. Pusillina cf. radiata (Philippi, 1836). a–b Juvenile eroded shells (a: 1.6 mm; b: 1.7 mm) (SE:DRN-7); c Protoconch (VE:GA-AT-800); d Alvania cancellata (Da Costa, 1778) (0.96 mm) (VE:AG-EBS-150); e Crisilla semistriata (Montagu, 1808) (1.9 mm) (SE-08:EBS14); f Onoba semicostata (Montagu, 1803) (1.7 mm) (SA:SARRI-3); g Manzonia crassa (Kanmacher, 1798) (2.1 mm) (SE:DRN7).