Euphilomedes nipponicus Hiruta 1976

Euphilomedes nipponicus Hiruta, 1976

Euphilomedes nipponica Hiruta, 1976: 580 –589, figs. 1–6; 1980: 156–166, figs. 12–23; Chavtur, 1978: 149; 1983: 23, 25, 28, 61, 62, table 2 (list); 1985: 58, 61; 1992: table 2 (list).

Distribution and Ecology. E. nipponicus is common in the coastal waters of the northwestern Pacific as a lowboreal species. In the East Sea it occurs in Peter the Great Bay at a depth range of 0–40 m (rocky bottom; fine, coarse, muddy sand; sand with an admixture of broken shell, pebble, plant detritus; Zostera nana; Sargassum myabey; Phyllospadix iwatensis; gravel with sand), in the Middle Primorye (43º20´N, 134º20´E) at the littoral (0–0.3 m; grass on rocks, sand with an admixture of pebble and detritus), off Monneron Island (46º17´N, 141º13´E) at 10–70 m (shell, rock, sand) (Chavtur 1983); and also this species was found at Oshoro Bay, coast of Hokkaido from 0 to 4 m (muddy sand) (Hiruta 1976, 1980). Besides, it is known (Chavtur 1983) from South Sakhalin and South Kuril Islands at a depth range of 0–100 m, mainly 0.5–25 m (sand or muddy sand without or with shell and algae; gravel with sand, bryozoans and sponges; rock and gravel without or with sponges, bryozoans and algae).