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Callipallene sagamiensis Nakamura & Child 1983

Comprehensive Description

provided by Smithsonian Contributions to Zoology
Callipallene sagamiensis

MATERIAL EXAMINED.—Sagami Bay. Tansei Maru cruise KT69-12, sta 21 (1, holotype, USNM 183832; 3, 2, 1 juv, paratypes). Off Shimoda, 18 Aug 1973 (1 ovig, paratype).

DESCRIPTION.—Animal moderately small, leg span 18.8 mm. Trunk completely segmented. Neck not longer than its diameter, anterior expansion no longer than wide, armed with pair of short dorsolateral setae over each chelifore insertion. Lateral processes little longer than their diameters and separated by slightly more than their diameters, glabrous. Ocular tubercle a short cylinder with apical cone slightly longer than its basal diameter. Eyes large, slightly pigmented. Abdomen a truncate cone slightly taller than ocular tubercle, armed with 4 dorsodistal setae. Proboscis moderately long, proximally a cylinder, distally tapering to rounded lips.

Chelifores robust, scape slightly curved, armed with several endal and distal setae. Chela length subequal to scape, fingers longer than palm. Palm armed with many dorsal setae, few ventrally. Immovable finger slightly curved, armed with few ectal setae, about 10 blunt triangular teeth. Movable finger straight, slightly curved at tip, armed with 8 or 9 blunt low teeth (apparently worn).

Oviger of typical shape, fifth segment longest, bearing large distal apophysis with terminal seta, sixth with one distal seta. Strigilis segments relatively long, slender, armed with distal setae and endal denticulate spines in the formula 9:8:7:8. Spines monomorphic, with a pair of marginal teeth near base and broad oval marginal fringe with tiny denticulations.

Legs long, slender, tibiae with many setae, some longer than segment diameter. Coxa 2 very long, 2.5 times longer than coxae 1 and 3 combined. Femur with few setae, with small midventral bulge bearing few setae. Second tibia longest, tibia 1 shorter with femur shortest of major segments. Cement glands not found. Tarsus short, quadrangular, armed with 2 dorsal setae, 3 or 4 ventral setae, without spine. Propodus moderately long, well curved, with several long dorsal setae and few short ventral setae. Without marked heel but with 3 large heel spines and a row of 15 or 16 short sole spines. Claw long, slightly curved, more than half length of propodus. Auxiliaries long, slender, two-thirds length of main claw.

MEASUREMENTS OF HOLOTYPE (mm).—Trunk length, 1.98; trunk width, 0.95; proboscis length, 0.61; abdomen length, 0.25; third leg, coxa 1, 0.31; coxa 2, 0.94; coxa 3, 0.4; femur, 1.82; tibia 1, 1.93; tibia 2, 2.24; tarsus, 0.12; propodus, 0.61; claw, 0.37.

ETYMOLOGY.—Named for its type-locality, Sagami Bay.

DISTRIBUTION.—Known from the type-locality, just north of Shimoda in 113 meters and from off Shimoda in 30 meters.
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bibliographic citation
Nakamura, K. and Child, C. Allan. 1983. "Shallow-Water Pycnogonida of the Izu Peninsula, Japan." Smithsonian Contributions to Zoology. 1-71. https://doi.org/10.5479/si.00810282.386

Habitat

provided by World Register of Marine Species
shelf

Reference

van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO).

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Jacob van der Land [email]