биота российских вод японского моря - Materials of Alexey Shipunov

Description. Utinomi’s collection included only females and juveniles, so thedescription below is a description of a female.Trunk smooth, relatively narrow, segmented; cephalic segment broader than itslength, with smooth frontal margin. Lateral processes separated by narrow intervals,expanding distally. Ocular tubercle large, conical, situated medially on cephalicsegment; eyes small. Proboscis almost cylindrical, slightly shorter than trunk, pointeddownward. Abdomen slightly longer than 4th lateral processes, truncated, protrudedupward. Chelifore about 3 times shorter than proboscis; scape straight; chela vestigial,with reduced fingers. Palp thin, 9-segmented; 4 proximal segments combined equal inlength to proboscis, smooth, unarmed; distal segments short, ventrally covered withsetae. Oviger completely absent in some specimens. Legs long, equally thin all alongtheir length, without tubercles or projections, with sparse setae on most segments. All3 coxae short, coxa 2 longest of them; femur, tibiae 1 and 2 subequal, each one'slength almost equal to length of coxae combined; propodus curved, expandedproximally, having small heel with 3 strong short spines. Main claw as long as half ofpropodus, auxiliary claws as long as 2/3 of main one. Trunk length of largest female0.88 mm.Geographical distribution. A. segmentata has been recorded near HokkaidoIsland and in Peter the Great Bay.Vertical distribution. This is a sublittoral species. In Peter the Great Bay it hasbeen found to a depth of 20 m.*Achelia superba (Loman, 1911)(Pl. XII, figs. 6–11)Loman, 1911: 11–13, pl. I, figs. 14–15; pl. II, figs. 16–24 (Ammothea superba);Nakamura, 1987: 21–23, pls. 18, 36; Turpaeva, 1990: 19–20, fig. 2; Child, 1995: 8 (Acheliasuperba).Description. Trunk compact, but segmented; cephalic segment broad, almostsquare, as long as half length of trunk; frontal margin slightly concave. Lateralprocesses slightly longer than width of trunk in its narrowest part, separated by narrowintervals, bear small tubercles on distal angles. Ocular tubercle very tall, cylindrical,situated near frontal margin; eyes small, placed on top. Proboscis large, thick, spindleshaped.Abdomen long, almost equal to trunk, protruded obliquely upward. Cheliforeslender; scape only slightly shorter than trunk and longer than 1/2 of proboscis; chelavery small, with immovable reduced fingers. Palp thin, 8-segmented; segment 2 aslong as scape, bears tubercle with spine on distal margin; segment 3 very short, alsohas tubercle with spine; segment 4 almost twice shorter than segment 2, or sometimesas long as 2/3 of segment 2; 4 distal segments very thin, cylindrical; their combinedlength almost equal to length of segment 2. Oviger in males longer than in females;segment 4 longest; segment 5 as long as 3/4 of segment 4; distal segments elongated,oval (typical shape for whole genus), bear two compound spines each. Legs of averagelength; coxa 1 has 2–3 small tubercles on distal margin; male coxa 2 bears tall genitalspur ventrally near distal margin; femur as long as all coxae combined, has tall processwith spine and cement gland opening dorsodistally; tibiae 1 and 2 equal, both thinnerand longer than femur; propodus thin, curved, without heel, about as long as half of112