биота российских вод японского моря - Materials of Alexey Shipunov

10-segmented, better developed in males, armed with several not serrate, butsometimes forked spines. Legs strong; tarsus short; propodal sole armed with basalspines proximally and small spinules in front of them. Auxiliary claws always present.Two species of this genus are found in the Sea of Japan.KEY TO THE SPECIES OF THE GENUS TANYSTYLUM1(2). Cephalic segment of trunk separated from 1st lateral processes by 1/2–1/3 theirdiameters; distal margins of lateral processes provided with 1–2 small tubercleswith spines on tops; proboscis broad at base and strongly tapered in distal third;palps 6-segmented ...............................................................*T. scrutator (p. 115)2(1). Cephalic segment of trunk in close contact with 1st lateral processes; lateralprocesses bear one short spine each on margins; proboscis broad, cylindrical,slightly tapered on end; palps 5-segmented .................... *T. ulreungum (p. 115)*Tanystylum scrutator Stock, 1954(Pl. XIV, figs. 1–4)Stock, 1954: 142–145, fig. 70; Kim & Hong, 1986: 50.T. scrutator is a sublittoral species. It was originally found near the eastern coastof Japan, later – off the south-eastern coast of Korea.*Tanystylum ulreungum Kim, 1983(Pl. XIV, figs. 5–8)Kim, 1983: 467, figs. 1, 2 (Tanystylum ulreungum); Nakamura & Child, 1983: 39–41, fig.13 (Tanystylum nabetensis).These are tiny animals, with span of legs 5.7 mm. The species inhabits thesublittoral zone. It is known from the southern part of the Sea of Japan (Namyang andUllung-do islands) and from Sagami Bay.2. Genus Lecythorhynchus Böhm, 1879Type species: Corniger hilgendorfi Böhm, 1879.Trunk strong, segmented, with well-developed cephalic segment and lateralprocesses, separated by relatively small intervals. Ocular tubercle conical, situatedslightly forward from centre of cephalic segment. Proboscis shorter than trunk, oval,cylindrical. Abdomen rather long, inserted on anterior margin of caudal trunksegment, fused with trunk. Chelifore in shape of 1-segmented rudimentary bud. Palp9-segmented; segment 6 attached to segment 5 at angle. Oviger 10-segmented, S-shape curved in males, without curve in females; distal segments bear simple orcompound spines, placed irregularly; no terminal claw. Legs almost twice longer thantrunk, strong; propodus curved, with isolated basal spines on sole.Only one species has been recorded in the Sea of Japan.115