Uroptychus pinocchio Poore & Andreakis, 2011

Baba, Keiji, 2018, Chirostylidae of the Western and Central Pacific: Uroptychus and a new genus (Crustacea: Decapoda: Anomura), Tropical Deep-Sea Benthos (Mémoires du Muséum national d'Histoire naturelle 212), pp. 1-612 : 399-400

Uroptychus pinocchio Poore & Andreakis, 2011

Uroptychus naso — Van Dam 1939: 402 (part). — Baba 1969: 42 (part), figs 1, 2b. — Baba et al. 2008: 37 (part), fig. 1F. — Baba et al. 2009: 47 (part),

fig. 39.

Uroptychus pinocchio Poore & Andreakis,2011: 164 , figs 4c, 4d, 5c, 10, 11.

TYPE MATERIAL — Holotype: Philippines, 14°01’N, 120°17’E, 184-186 m, male ( MNHN-IU-2014-16859 [= MNHN-Ga 6232 ]). [examined].

OTHER MATERIAL EXAMINED — Philippines. MUSORSTOM 1 Stn CP 61, 14°00’N, 120°17’E, 202- 184 m, 27.III.1976, 1 ♂ 7.1 mm ( MNHN- IU-2014-16858 [= MNHN-Ga 6230]). MUSORSTOM 2 Stn CP 02, 14°00’N, 120°17’E, 186- 184 m, 20.XI.1980, 1 ♂ 7.1 mm (holotype, MNHN- IU-2014-16859 [=MNHN-Ga 6232]) . – Stn CP51, 14°00’N, 120°17’E, 170-187 m, 27.XI.1980, 1 ov. ♀ 8.7 mm, 1 ♀ 6.2 mm (MNHN-IU-2014-16860 [=MNHN-Ga 6234]) .

DISTRIBUTION„ Philippines, NW Kyushu ( Japan) and Taiwan; in 153- 225 m.

DIAGNOSIS — Carapace as long as broad; greatest breadth 1.6-1.7 × distance between anterolateral spines. Dorsal surface covered with setiferous tubercles, and with conical tubercles or small spines laterally and around cervical groove, small spines on hepatic region and behind lateral part of rostrum; with deep cervical groove bordering gastric and cardiac regions and anterior and posterior branchial regions, anterior cervical groove indistinct. Lateral margins divergent poste- riorly; anterolateral spine relatively small, distinctly overreaching small or obsolete lateral orbital spine, followed by a few small spines on hepatic region and relatively large spines on branchial region; anterior branchial margin with 2 spines, anterior larger than anterolateral spine, posterior smaller than anterior, often followed by much smaller spine; posterior branchial margin with 7-9 large spines relatively widely spaced anteriorly, closely so posteriorly, usually with intermediate small spines, followed by a few small close spines. Rostrum broad, long triangular, with interior angle of 30°, nearly horizontal; dorsal surface covered with tubercles and depressed in midline, laterally with 6-8 small spines on anterior half; length 0.8-0.9 × that of carapace, breadth about half carapace breadth at posterior carapace margin. Pterygostomian flap covered with conical tubercles, anteriorly angular and produced to strong spine. Excavated sternum anteriorly ending in convex margin, surface with longitudinal ridge in midline. Sternal plastron 1.4 × longer than broad, lateral extremities subparallel; sternite 3 moderately depressed; anterior margin shallowly excavated, bearing deep U-shaped median notch without flanking spine, anterolaterally rounded or somewhat angular with obsolescent denticles; anterolateral margin of sternite 4 denticulate, nearly straight, about as long as posterolateral margin. Anterolateral margin of sternite 5 shorter (0.7-0.8 x) than posterolateral margin of sternite 4. Abdominal somite 1 with well-elevated transverse ridge; somite 2 tergite 2.0-2.2 × broader than long, pleural lateral margin moderately concave, slightly divergent posteriorly; pleuron of somite 3 laterally blunt. Telson 0.4 × as long as broad; posterior plate distinctly emarginate, length 1.3 × that of anterior plate. Eyes short, barely reaching proximal third of rostrum. Ultimate antennular article 3 × longer than high. Antennal peduncle having distal 2 articles each mesially with distoventral spine; article 5 1.4 × as long as article 4, breadth 0.6 × height of antennule ultimate article; antennal scale barely reaching apex of article 5; flagellum of 9-10 segments very short, about as long as distal 2 articles combined. Mxp1 with bases close to each other. Mxp3 basis with 3-5 obsolescent denticles; ischium with 3-5 small spines lateral to distal end of flexor margin, crista dentata with 10-12 distally diminishing denticles; merus 1.7-2.0 × longer than ischium, flattish on mesial face, with distinct distolateral spine, flexor margin with a few distinct spines distal to midlength; carpus with distinct distolateral spine and small spines on lateral face. P1 somewhat depressed distally, covered dorsally and ventrally with elevated short ridges bearing a few to several small spines or tubercle-like spines (median one larger in small female) and short setae, laterally and mesially with distinct spines usually of small size; ischium with strong dorsal spine with laterally and dorsally accompanying small spines, ventromesial margin with strong subterminal spine followed by row of small spines; merus 1.0-1.1 × longer than carapace; carpus 1.3-1.4 × as long as merus; palm as long as or slightly longer than carpus, height 0.8 × breadth in midlength; fingers depressed, slightly incurved distally, movable finger with 2 processes on opposable margin in both sexes, length 0.4 × that of palm. P2-4 broad relative to length, bearing fine setae much longer than those on P1; meri successively shorter posteriorly (P3 merus 0.8 × length of P2 merus, P4 merus 0.8 × length of P3 merus), equally broad on P2-4; length-breadth ratio, 3.6-3.8 (3.3) on P2, 2.8-3.0 (2.6) on P3, 2.3-2.5 on P4; P2 merus 0.7-0.8 × length of carapace, 1.4-1.6 × length of P2 propodus; P3 merus subequal to length of P3 propodus; P4 merus 0.8-0.9 × length of P4 propodus; meri covered with denticles on lateral surface, mesial face flattish, dorsal margin sharply ridged bearing row of sharp spines with subparalleling small spines directly lateral to it, distal portion of ventrolateral margin with several spines as equally sharp as but larger than those on extensor margin, terminal spine strongest; carpi subequal on P2-3, shorter on P4, or successively shorter posteriorly; each less than half (0.4) length of propodus on P2-4, extensor margin with 7 spines (rarely 9 on P4); propodi successively longer posteriorly; flexor margin straight, with pair of distal spines preceded by smaller, proximally diminishing spines or robust setae (5-8 on P2, 4-7 on P3, 2-4 on P4); lateral and mesial faces with dense tufts of short setae arranged in 2 rows; dactyli short relative to breadth, less than half as long as propodi, dactylus-carpus length ratio, 0.8-1.0 on P2, 1.0 on P3-4; flexor margin with row of somewhat inclined spines or robust setae (14-16 on P2, 10 on P3 and P4), penultimate much broader, fully 2 × broader than antepenultimate, ultimate somewhat broader and distinctly longer than antepenultimate, remaining spines slender and more like setae.

PARASITES — The smaller female from MUSORSTOM 2 Stn CP51 (MNHN-IU-2014-16860) bears a rhizocephalan externa.

REMARKS — This species is grouped together with U. naso Van Dam, 1933 and U. cyrano Poore & Andreakis, 2011 . The relationships between U. naso and U. pinocchio are discussed under U. naso (see above).