Adontorhina cyclia S. S. Berry, 1947

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 : 245-246

Adontorhina cyclia S. S. Berry, 1947

( Fig. 4 G, H )

Adontorhina cyclia S. S. Berry, 1947: 260–261 , pl. 1, figs 1–2.

Material examined: four specimens from the sea slope of the Kunashir , Paramushir, and Atlasova Islands (200–805 m) .

Distribution: Sea of Japan; off Japan (Pacific Ocean); Sea of Okhotsk; Kuril Islands; Commander Islands; Bering Sea; Alaska; to Baja California; Gulf of California (12– 2,770 m) ( Scott 1986; Kamenev 1995, 1996, 2013; Coan, Valentich-Scott & Bernard 2000; Kantor & Sysoev 2005; Coan & Valentich-Scott 2012; Kamenev & Lisitsyna 2024).

Remarks: This species, widely distributed in the North Pacific, has been recorded from the region of the Kuril Islands for the first time ( Kamenev & Lisitsyna 2024).

Figures

FIGURE 4. New and rare bivalve species for the fauna of the Kuril Islands. (A, B) Macoma torelli (Kunashir Island, 220 m, shell length 16.0 mm). (C, D) Kellia comandorica (Urup Island, 20 m, shell length 13.2 mm). (E, F) Kellia kussakini (Urup Island, 10 m, shell length 3.8 mm). (G, H) Adontorhina cyclia (Kunashir Island, 200 m, shell length 2.2 mm). (I–L) Adontorhina inflata (Zelyony Island, 1,742 m): I, exterior view of right valve (shell length 1.4 mm); J–L, scanning electron micrographs: (J) right valve (interior view), (K) both valves (dorsal view; RV up), (L) hinge plate of right valve. (M, P) Netastoma japonicum (South Kuril Strait, 25 m, shell length 12.7 mm). Scale bars: J–L=100 μm.