биота российских вод японского моря - Materials of Alexey Shipunov

2. Achelia bituberculata Hedgpeth, 1949(Pl. XI, figs. 1–6)Hedgpeth, 1949: 287–289, fig. 41a–g; Nakamura & Child, 1983: 6–7; Kim, 1984: 537,fig. 6a–i; Kim & Hong, 1986: 46; Nakamura, 1987: 18–19, pl. 16 (Achelia bituberculata);Utinomi, 1951: 163, fig. 2; 1954: 18–20, fig. 6; 1971: 330 (Achelia ohshimai).Description. Trunk compact, rounded, unsegmented; mid-dorsal line bears 2 talltubercles having 2–3 tops with spines near abdomen base. Lateral processescontiguous; several tubercles with spines situated on each lateral process dorsodistally.Same tubercles with spines situated near frontal margin of trunk. Ocular tubercle tall,with flattened top and pigmented eyes. Proboscis large, oval, elongated, almost equalto trunk length. Abdomen long, swollen in basal part, extended almost horizontally,reaching beyond distal ends of 1st coxae of 4th legs. In adults abdomen tuberculatedand slightly curved upward, so that trunk looks saddle-shaped in lateral view.Chelifore 3–4 times shorter than proboscis; scape cylindrical, almost 4 times longerthan its diameter, with tubercles on dorsal side and distal end; chela small, globular.Palp 8-segmented; segment 2 longest, almost 6 times as long as broad; segment 4 withdorsal swellings bearing stiff setae. Oviger 10-segmented; segments 4 and 5 in malesalmost twice longer than segment 3; segment 6 bearing 2 simple spines pointed toproximal end of segment; distal segments bear compound spines: 2 on segment 10,and 1–3 (number differs from specimen to specimen) on other segments. Legs armedwith strong spines, situated on small tubercles; coxa 2 in males bears long genital spuron ventral side; femur longest of all segments, bears tubercle with cement glandopening on dorsal side; propodus robust, almost equal in length to tibia 2, noticeablycurved, bears 3 large spines on sole proximally. Main claw slightly longer than half ofpropodus, strong, curved; auxiliary claws slightly longer than half of main one.Measurements of holotype: trunk 1.5 mm, proboscis 1.25 mm, abdomen 0.6 mm, 3rdleg 4.63 mm.Geographical distribution. The species occurs near the Pacific coast of Japan,near the Korean Peninsula in the Sea of Japan and the East China Sea, also in Peter theGreat Bay.Habitat. A. bituberculata is a littoral and high sublittoral species, recorded to adepth of 75 m. It was found in Peter the Great Bay among the fouling of specialexperimental plates.*Achelia brevirostris Losina-Losinsky, 1961(Pl. IX, figs. 6–11)Losina-Losinsky, 1961: 95–97, fig. 19; Nakamura & Child, 1991: 3–5, fig. 1a–f; Child,1995: 3.Description. Trunk rounded, unsegmented. Lateral processes robust, placed incontact. Low tubercles without spines on angles of lateral processes and of frontalmargin of trunk. Ocular tubercle low, with conical top, situated near anterior margin ofcephalic segment; eyes in middle part of tubercle. Proboscis twice shorter than trunk,rather slender, pointed downward. Abdomen long, robust, slightly curved upward.Chelifore with vestigial chelas lacking fingers, almost twice shorter than proboscis.Palp 8-segmented; segment 2 longest; segment 4 slightly shorter than segment 2; other108