Paraspongicola inflatus (de Saint Laurent & Cleva, 1981 ) Saito & Komai, 2008

Saito, Tomomi & Komai, Tomoyuki, 2008, A review of species of the genera Spongicola de Haan, 1844 and Paraspongicola de Saint Laurent & Cleva, 1981 (Crustacea, Decapoda, Stenopodidea, Spongicolidae), Zoosystema 30 (1), pp. 87-147 : 132-138

publication ID	https://doi.org/ 10.5281/zenodo.5394684
persistent identifier	https://treatment.plazi.org/id/03D98794-FFF1-9A4C-FF23-7176FC597D82
treatment provided by	Marcus
scientific name	Paraspongicola inflatus (de Saint Laurent & Cleva, 1981 )
status	comb. nov.

Treatment

Paraspongicola inflatus (de Saint Laurent & Cleva, 1981) n. comb.

( Figs 30-34 View FIG View FIG View FIG View FIG View FIG )

Spongicola inflata de Saint Laurent & Cleva, 1981: 179 , figs 14a-g, 15a-g. — Saito & Takeda 2003: 120.

TYPE MATERIAL. — Holotype: Philippines, MUS- ORSTOM 1, stn 32, 14°02.2’N, 120°17.7’E, 193- 184 m, 23.III.1976, ♂ 2.5 mm (MNHN-Na 2926). Examined. GoogleMaps

Paratype: Philippines, MUSORTOM 1, stn 60, 14°06.6’N, 120°18.2’E, 129- 124 m, 27.III.1976, 1 ♂ 1.6 mm (MNHN-Na 2927). Examined.

OTHER MATERIAL EXAMINED. — Philippines. MUS- ORSTOM 3, stn CP 131, 11°37’S, 121°43’E, 120-122 m, 5.VI.1985, 1 ♂ 4.5 mm (MNHN-Na 16354).

Indonesia. KARUBAR, stn DW 01, Kai Islands, 05°46’S, 132°10’E, 156-305m, 22.X.1991, 1 ♂ 4.7 mm, 2 ♀♀ 3.6 mm, damaged (MNHN-Na 16324).

New Caledonia. BIOCAL, stn DW 37 , 22°55.99’S, 167°15.65’E, 350 m, 30.VIII.1985, 1 ♂ 3.6 mm, 1 ovig. ♀ 3.1 mm, 2 ♀♀ 3.2, 3.3 mm (MNHN-Na 16325) GoogleMaps ; 1 ♂ 3.2 mm (MNHN-Na 11982).

MUSORSTOM 4, stn DW 222, 22°57.6’S, 167°33.0’E, 410-440 m, 30.IX.1985, associated with Crathrochone clathroclada , 1 ovig. ♀ 4.0 mm (MNHN-Na 16326). — Stn DW 226, 22°47.2’S, 167°21.6’E, 395 m, 30.IX.1985, 1 ♂ 3.7 mm (MNHN-Na 16327).

CHALCAL 2, stn CP 27, 23°15.29’S, 168°04.55’E, 289 m, 31.X.1986, 4♂♂ 2.9-4.0 mm, 1 ovig. ♀ 3.8 mm (MNHN-Na 16328).

VOLSMAR, stn DW 39, Matthew and Hunter islands, 22°20.50’S, 168°43.50’E, 305 m, 8.VI.1989, 1 ♂ 4.5 mm (MNHN-Na 16329).

SMIB 5, stn DW 97, Azteque Bank, 23°01.1’S, 168°18.0’E, 300 m, 14.IX.1989, 1 ♂ 3.8 mm, 1 ♀ 3.8 mm (MNHN-Na 11967). — Stn DW 102, Norfolk Ridge, 23°19.6’S, 168°04.7’E, 290-305 m, 14.IX.1989, 1 ♂ 4.1 mm (MNHN-Na 11966).

BERYX 11, stn DW 40, Norfolk Ridge, 23°41’S, 168°01’E, 240-300 m, 20.X.1992, 1 ♂ 4.4 mm (MNHN-Na 16330). — Stn CP 44, Norfolk Ridge, 23°41’S, 168°01’E, 230-250 m, 20.X.1992, 1 ♂ 3.8 mm (MNHN-Na 16331). — Stn CP 45, 23°40’S, 168°01’E, 270-290 m, 20.X.1992, 4 ♂♂ 3.7-4.6 mm, 3 ovig. ♀♀ 3.6-4.0 mm, 2 ♀♀ 3.8, 4.0 mm (MNHN-Na 16332). — Stn CP 46, 23°42’S, 168°01’E, 300-350 m, 20.X.1992, 1 ♂ 3.7 mm, 1 ovig. ♀ 3.5 mm (MNHN-Na 16333).

SMIB 8, stn DW 182, Azteque Bank, 23°19.3’S, 168°04.8’E, 314-340 m, 31.I.1993, 1 ♂ 4.7 mm (MNHN-Na 16355).

BATHUS 3, stn CP 804, 23°41.40’S, 168°00.42’E, 244- 278 m, 27.XI.1993, 7 ♂♂ 3.7-4.9 mm, 2 ovig. ♀♀ 4.1,

4.9 mm (MNHN-Na 16334). — Stn CP 812, 23°43.38’S, 168°15.98’E, 391-440 m, 28.XI.1993, 1 ♂ 4.4 mm, 2 ovig. ♀♀ 3.9, 4.4 mm (MNHN-Na 16335). LITHIST, stn CP 15, W of Jumeau Bank, 23°40.4’S, 168°15.0’E, 389-404 m, 12.XII.1999, 1 ♀ 4.2 mm

(MNHN-Na 16336).

NORFOLK 1, stn DW 1667, Jumeau-west Bank, 23°40’S, 168°01’E, 237-250 m, 21.VI.2001, 1 ♂ 4.0 mm (MNHN-Na 16337). — Stn DW 1707, Jumeau-east Bank, 23°43’S, 168°16’E, 381-493 m, 25.VI.2001, 1 ♀ 4.9 mm (MNHN-Na 16338).

NORFOLK 2, stn 2024, Banc Brachiopode, 23°27.92’S, 167°50.90’E, 370-371 m, 21.X.2003, 1 ♂ 3.9 mm, 1 ♀ 3.6 mm (MNHN-Na 16356).

Loyalty Island. MUSORSTOM 6, stn CP 401, 20°42.15’S, 167°00.35’E, 270 m, 14.II.1989, 1 ovig. ♀ 3.5 mm (MNHN-Na 11964).

Madagascar. VAUBAN, stn CH 14, 12°43.3’S, 48°15.7’E, 242-255 m, calcareous sand, 15.IV.1971, 1 ♂ 2.4 mm, 3 ♀♀ 3.0 mm (MNHN-Na 3559) GoogleMaps ; 1 ovig. ♀ (MNHN- Na 3600).

Project not indicated: stn DP 14, 1 ovig. ♀ 3.0 mm, 2 ♀♀ 2.8, 3.1 mm (MNHN-Na 16348). — Stn DP 100, associated with Crathrochone clathroclada , 1 ♂ 3.2 mm (MNHN-Na 16349). — Stn DP 183, associated with Crathrochone clathroclada , 1 ♂ 3.5 mm (MNHN-Na 16350).

DISTRIBUTION. — Philippines, Indonesia, New Caledonia, Loyalty Islands and Madagascar, 120-493 m ( Figs 36 View FIG ; 39 View FIG ; Table 6).

HOST. — Hyalonematidae sp. and Crathrochone clathroclada ( Table 7).

DESCRIPTION OF FEMALES

Rostrum ( Fig.31A, B View FIG ) 0.35-0.59 of carapace length, directed slightly downward, reaching midlength of second segment of antennular peduncle; dorsal margin straight, armed with 6-10 teeth, including 1 or 2 teeth on carapace posterior to orbital margin; ventral margin unarmed or armed with 1 subterminal tooth; ventrolateral ridge sharp, unarmed. Carapace ( Fig.31A, B View FIG ) with postrostral median ridge extending to base of postrostral submedian spines; postrostral submedian spine small; antennal spine moderately small, acuminate; hepatic spine small, sometimes rudimentary or absent; 3-5 anterolateral spines forming single oblique row; anterolateral margin with row of spinules; pterygostomial angle produced, terminating in acute point; cervical groove rudimentary.

Sixth thoracic sternite ( Fig. 31C View FIG ) with very slender, spiniform lobes, narrowly separated, each lateral margin with 1 or 2 denticles. Seventh sternite with moderately broad lobes, separated by very narrow slit; each anterior margin strongly concave, anterolateral angle produced, terminating in acute or subacute tooth, anteromesial angle terminating in acute point; lateral margins faintly sinuous, unarmed. Eighth sternite with rounded, laterally directed lobes, smaller than those on seventh sternite.

Pleon moderately depressed dorsoventrally. First somite ( Fig. 30 View FIG ) with distinct transverse carina, its margin partially overhanging deeply depressed anterior section; ventral margin of anterior section produced in blunt process; posteroventral margin of posterior section unarmed. Second somite without distinct transverse carina, only shallow transverse groove evident. Second to fourth pleura rounded, unarmed on ventral margin. Pleuron of fifth somite generally rounded, sometimes with 1 or 2 minute teeth anteroventrally. Sixth somite ( Fig. 31D View FIG ) slightly widened posteriorly, unarmed or armed with 1-3 lateral spines on either side; pleuron unarmed or armed with 1 or 2 minute denticles marginally. Telson ( Fig. 31D View FIG ) broadly triangular, about 1.4 times longer than broad; dorsal surface often pair of proximal spines near base, dorsolateral carinae each with 2-5 spines; lateral margins each with shallow subproximal concavity, and armed with 1 small submarginal spine and with a row of 2-5 spines; posterolateral spines present; posterior margin rounded, with posteromedian spine.

Cornea ( Fig. 31A, B View FIG ) darkly pigmented, narrower than eyestalk; eyestalk somewhat inflated at midlength, armed with 2-4 small spines dorsally and 4 or 5 similar spines mesially. Antennular peduncle ( Fig. 31A, B View FIG ) overreaching midlength of antennal scale; first segment about twice in length to second segment, ventrodistal mesial angle produced in prominent spine; stylocerite acute, straight or slightly curved mesially; second segment unarmed. Antennal basicerite ( Fig. 31A, B View FIG ) stout, bearing small distolateral spine and with 0-4 small additional spines on ventrolateral margin; antennal scale subsemicircular, about 2.1 times longer than wide, lateral margin nearly straight, serrated with row of 5-8 teeth, dorsal surface with 2 distinct longitudinal carinae; carpocerite reaching nearly second segment of antennular peduncle.

Third maxilliped ( Fig. 32A View FIG ) overreaching antennal scale by length of dactylus and propodus; dactylus subequal in length to propodus; propodus 0.8 of carpal length; carpus 0.8 of meral length, ventrodistal margin produced into blunt process; merus somewhat twisted, 0.7 of ischial length, with small distolateral spine; ischium armed with 7-16 spines on dorsolateral margin, distalmost spine strongest. Exopod nearly reaching to proximal margin of merus.

First pereopod ( Fig. 32B, C View FIG ) overreaching antennal scale by length of chela and carpus; dactylus 0.3 of chela length; palm with grooming setae on entire ventral surface ( Fig. 32C View FIG ); carpus longest, 1.5-2.3 of chela length, with sparse grooming setae ventrodistally; merus about 0.8 of carpal length; ischium 0.5-0.6 of meral length.Second pereopod ( Fig. 32D View FIG ) 3.2 times longer than carapace, overreaching tip of antennal scale by length of chela and carpus; dactylus 0.4 of chela length; palm subcylindrical,

Saito T. & Komai T.

about 2.6 times longer than wide; carpus 1.2 of chela length; merus 0.8 of carpal length; ischium 0.5-0.6 of meral length, all segments unarmed.Third pereopod ( Fig. 32E View FIG ) overreaching tip of antennal scale by length of chela and carpus; chela 1.4-1.9 times longer than carapace; dactylus about half of chela length, with row of small teeth or denticles on proximal half of dorsal margin; fixed finger with row of small denticles or tubercles extending onto palm; palm broad, about 1.2 times longer than wide, with row of small teeth and sparse setae on dorsal margin, ventral margin also with sparse setae, lateral surface smooth; carpus broadened distally, about 1.3 times longer than wide, 0.4 of chela length, unarmed or armed with 3 or 4 spines on lateral surface; merus 0.6 of carpal length, with 1 moderately large subterminal spine on dorsal margin, ventrolateral margin also with 1 large subterminal spine, ventromesial margin nearly smooth; ischium half of meral length, with large dorsodistal spine, and row of small teeth or denticles on dorsal and ventral margins. Fourth pereopod ( Fig. 32F View FIG ) overreaching antennal scale by length of dactylus and propodus; dactylus ( Fig. 32G View FIG ) about 0.3 of propodal length, broad, 2.7 times longer than wide, triunguiculate (dorsal and ventral unguis subequal, accessory tooth on ventral margin large, exceeding half length of ventral unguis); propodus about half of carpus, entire, with row of slender movable spines on ventral margin; carpus longest, entire or subdivided into 2 articles, with small movable spine at ventrodistal margin and midlength of ventral margin; merus 0.8 of carpal length; ischium 0.7 of meral length, unarmed. Fifth pereopod similar to fourth.

Exopod of uropod ( Fig. 31D View FIG ) with serration of 11-14 teeth on lateral margin, dorsal surface with 2 longitudinal carinae; endopod with serration of 9-13 teeth on lateral margin, posteriormost tooth enlarged, and occasionally with 1 subproximal spine on middorsal carina.

Eggs counting 91, diameter 0.6-0.9 mm (1 example, MNHN-Na 11964) ( Table 5).

MALE CHARACTERISTICS Rostrum ( Fig.33 View FIG ) 0.35-0.56 of carapace length.Sixth ( Fig.34A View FIG ) thoracic sternite with very slender, strongly bifurcate lobes; seventh sternite with relatively narrow subtriangular lobes, each terminating in simple or bifid point, lateral margin with row of small teeth or denticles.Eighth sternite with triangular lobes directed anterolaterally, each anterolateral angle terminating in bifid tooth, lateral margins sinuous. First pleonal somite ( Fig. 33 View FIG ) with prominent ventral projection supported by short, but distinct ridge, terminating in subacute point. Pleura of second to sixth pleonal somites ( Fig. 34B View FIG ) produced in acute tooth ventrally or posteroventrally, with additional small teeth or denticles on margins.First pereopod ( Fig.34C View FIG ) with carpus 1.4-2.3 of chela length. Second pereopod ( Fig. 34D View FIG ) more robust than that of female; dactylus 0.4 of chela length;palm conic, broadened posteriorly, about twice as long as wide; carpus subequal in length to palm.Third pereopod ( Fig.34E View FIG ) with chela 1.8-2.0 times longer than carapace; palm about 1.1 times longer than wide, bearing many scattered granules or small tubercles on distal part of lateral surface.

REMARKS

Paraspongicola inflatus n. comb. was originally described based only on two male specimens from the Philippines (de Saint Laurent & Cleva 1981). The present male specimens from Indonesia, New Caledonia and Madagascar are generally similar to the type specimens, but some differences are noted ( Table 4). The males from New Caledonia differ from the types and other specimens in the following particulars:the hepatic spine is rudimentary or absent in the New Caledonian specimens, but distinct in the types and other specimens ; the carpus and merus of the first pereopod is relatively longer, the length ratios of carpus and merus against chela of the first pereopod is 1.8-2.3 and 1.4-1.8 in the New Caledonian specimens, but 1.4-2.0 and 1.1-1.6 in the types, the Indonesian and Madagascan specimens. The females from the Philippines, Indonesia, New Caledonia and Madagascar are also generally similar, but different in the following respects ( Table 4): 1) the rostrum is relatively shorter in the New Caledonian specimen than in the other specimens (0.35-0.44 of the carapace length versus 0.50-0.59 in the Philippine, 0.47 in the Indonesian, and 0.39-0.50 in the Madagascan specimens) ; 2) the hepatic spine is rudimentary or absent in the New Caledonian specimens compared to distinct one in the other specimens, but this is often absent in Madagascan specimens ; and 3) the carpus and merus of the first pereopod is relatively longer in the New Caledonian specimens, the length ratios of carpus and merus against chela of the first pereopod is 2.0-2.3 and 1.5-1.8 in the New Caledonian specimens, but 1.5-1.7 and 1.1-1.3 in the other specimens. During this study, only a few specimens from the Philippines were available. Therefore, it is difficult to fully assess whether the observed differences among the specimens from the Philippines, Indonesia, New Caledonia and Madagascar are species-specific or intraspecific variations. The present assignment of the specimens from Indonesia, New Caledonia and Madagascar to P. inflatus n. comb. should be considered provisional .