биота российских вод японского моря - Materials of Alexey Shipunov

segments short, cylindrical; 4 distal segments covered with dense short setae. Ovigernot longer than trunk; segment 4 longest; segment 5 shorter; segment 3 even shorter;other segments short; segment 10 bears two compound spines; segment 9 bears onecompound spine. Legs twice longer than trunk, with sparse short setae; each coxa 2 of3rd and 4th legs ventrally bears tall conical tubercle with genital pore; femur greatlyexpanded distally, bears projection with spine on margin of dorsal side; tibiae 1 and 2equal, longer than femur; propodus quite robust, curved, bears 3 large spines on soleproximally. Main claw almost equal to propodus in length, slightly curved; auxiliaryclaws small, similar to basal spines on sole. Trunk length of adult specimens1.4–1.5 mm.Remarks. The above given diagnosis is the one of A. brevirostris, a holotype ofwhich was found in the Sea of Okhotsk, near the South Sakhalin (Tyuleniy Island), ata depth of 48 m. Specimens from other places, assigned to this species, differ from theholotype in the less compact trunks, taller ocular tubercles and presence of tubercleson distal margins of lateral processes. Specimens collected near Japan, from depths to479 m, have longer palps, relatively short main claws, and longer auxiliary claws(Nakamura & Child, 1991; Child, 1995).The distribution pattern of A. brevirostris presupposes that the species may occurin the northern part of the Sea of Japan.*Achelia latifrons (Cole, 1904)(Pl. X, figs. 13–15)Cole, 1904: 263–266, pl. 11, fig. 3, pl. 16, figs. 1–9, pl. 17, figs. 1–3 (Ammothealatifrons); Kim & Hong, 1986: 46–48, fig. 8 (Achelia latifrons); Nakamura & Child, 1983: 8–10, fig. 2 (Achelia orpax).A. latifrons is widespread on the continental shelf of the Northern Pacific. It hasbeen recorded off California at a depth of 650 m, in the Bering Sea near the Pribilofand Unalaska islands, in Sagami Bay at a depth of 30 m, and in the Korea Strait. It hasnot been registered in the Sea of Japan yet, but in future may be found in its southernpart.3. Achelia kurilensis Losina-Losinsky, 1961(Pl. X, figs. 1–7)Losina-Losinsky, 1961: 98–100, fig. 21; Nesis, 1967: 249.Description. Trunk disk-shaped, unsegmented. Anterior part of cephalic segmentshort, bears two tubercles with spines on tops. Lateral processes broad, placed incontact, each bears two rather tall tubercles with spines distally, of which posteriortubercle larger, situated near middle of distal margin. Ocular tubercle cylindrical, withrounded apex; eyes near apex. Proboscis oval, as long as trunk. Abdomen almost equalto trunk, swollen distally, with several large setae on dorsal side. Chelifore slightlylonger than 1/2 of proboscis; scape long, with 3 tubercles on medial part and 3 thinspines on distal margin; chela small, globular. Palp 6–8 segmented; in holotype (male)palp 6-segmented, as long as proboscis, with segment 4 longest; in paratype (female)palp 8-segmented, with segment 2 longest; distal segments sparsely covered with109