Nuculana ensiformis Scarlato, 1981

Lisitsyna, Kseniya N. & Kamenev, Gennady M., 2024, New and rare bivalve species for the fauna of the Kuril Islands (northwestern Pacific Ocean): A study of materials collected over 70 years of expeditions (from 1949 to 2019), Zootaxa 5523 (2), pp. 231-253 : 237

Nuculana ensiformis Scarlato, 1981

( Fig. 2 E, F )

Nuculana (Nuculana) ensiformis Scarlato, 1981: 182 , photos 46–49.

Material examined: 97 specimens from the ocean and sea slopes of the southern Kuril Islands ( Iturup , Shikotan , Kunashir , Yuri, and Polonsky Islands) (100–700 m) .

Distribution: Hokkaido to northeast Honshu Island ( Japan), Pacific Ocean; southern Kuril Islands (100–700 m) ( Scarlato 1981; Kantor & Sysoev 2005; Okutani, Saito & Haga 2009; Kurozumi, Tsuchida & Okutani 2017).

Remarks: According to earlier reports, in the waters of the Kuril Islands, this species was recorded only from off Iturup Island at a depth to 414 m ( Scarlato 1981); off Japan, to 355 m ( Okutani, Saito & Haga 2009).

Figures

FIGURE 2. New and rare bivalve species for the fauna of the Kuril Islands. (A, B) Acila divaricata (Kunashir Strait, 200 m, shell length 29.7 mm). (C, D) Acila insignis (Yuri Island, 1000 m, shell length 11.0 mm). (E, F) Nuculana ensiformis (Shikotan Island, 200 m, shell length 22.5 mm). (G, H) Poroleda ushakovi (Shumshu Island, 820 m, shell length 17.1 mm). (I, J) Robaia robai (Kunashir Strait, 300 m, shell length 16.3 mm). (K, L) Yoldia hyperborea (Paramushir Island, 215 m, shell length 19.0 mm). (M, N) Scanning electron micrographs of Huxleyia pentadonta (Paramushir Island, 214 m, shell length 2.3 mm). (O, P) Samacar kurilensis (Iturup Island, 265–270 m, shell length 16.5 mm). (Q, R) Tetrarca boucardi (Shpanberg Strait, 55 m, shell length 20.0 mm). (S, T) Limopsis oliveri (Urup Island, 50 m, shell length 9.0 mm). (U, V) Limopsis vaginata (Iturup Island, 600 m, shell length 26.3 mm).