биота российских вод японского моря - Materials of Alexey Shipunov

Geographical distribution. A. echinata orientalis is distributed near the coastsof Japan, in the Sea of Japan and the Yellow Sea, and near the South Sakhalin. In theSea of Japan it occurs in Peter the Great Bay.Vertical distribution. The subspecies is found in the littoral zone to a depth of130 m (mainly from 0 to 15 m).8. Achelia kamtschatica Losina-Losinsky, 1961(Pl. XIII, figs. 8–13)Losina-Losinsky, 1961: 92–93, fig. 17.Description. Trunk almost rounded, not completely segmented. Two posteriorsegments without articulation lines on dorsal side. Anterior part of cephalic segmentshort; no tubercles. Broad lateral processes almost in contact, distally provided with 2–3 unarmed or bearing short spines tubercles. Ocular tubercle low, conical, situatednear frontal margin, bears large eyes at 1/2 of its height. Proboscis slightly shorter thantrunk, thin, tapering from middle to end. Abdomen shorter than proboscis, slightlybroadened distally, tapered towards end, reaching distal margin of 4th leg coxa 1.Chelifore almost 3 times shorter than proboscis; scape bears tubercle distally; chelatwice as short as scape, oval in outline, without fingers. Palp 8-segmented, slightlylonger than proboscis; segment 2 longest; segment 4 slightly shorter than segment 2;other segments short, armed with setae as long as segment’s width. Oviger in malesalmost twice longer than trunk; segment 3 longest; distal segments gradually decreasein length; no compound spines on them. Legs 12 times as long as trunk, armed withsparse short spines; coxa 1 bears dorsodistal tubercle (its height almost equal to coxa’slength), and 2–3 lateral tubercles with spines; coxa 2 and femur bear large (but lowerthan that of coxa 1) tubercle each; femur and tibia 1 equal in length; tibia 2 longer;propodus robust, curved, without heel, having 3 large spines on sole proximally. Mainclaw longer than half of propodus; auxiliary claws 3 times shorter than main claw.Measurements: trunk 0.90 mm, proboscis 0.72 mm, abdomen 0.50 mm, chelifore0.27 mm, palp 0.97 mm, oviger 1.65 mm, leg 10.81 mm.Geographical distribution. The description of A. kamtschatica was made usingthe specimens collected near the southeastern coast of Kamchatka Peninsula(Akhomten and Morzhovaya Bights) at 30–50 m depths. A. kamtschatika was alsofound in the fouling of experimental plates and cages from Alekseev and VityazBights (in Peter the Great Bay), and in the samples taken from the high sublittoralzone of Medny Island (the Commander Islands).Vertical distribution. The species inhabits the high sublittoral zone.*Genus Tanystylum Miers, 1879Type species: Nymphon stylygerum Miers, 1875.Trunk shield-shaped, flat, unsegmented. Lateral processes broad; placed incontact in some species, separated by narrow intervals in others. Ocular tubercle ofvarious shapes, with well-developed eyes. Proboscis slightly longer than trunk,tapering forward. Chelifores present as rudimentary tubercles, rarely with vestigialchelas. Palp consists of 4–7 segments, slightly longer or shorter than proboscis. Oviger114