Trichopeltariidae (Crustacea, Decapoda, Brachyura), A New Family And Superfamily Of Eubrachyuran Crabs With Description Of One New Genus And Five New Species Author Tavares, One New Genus And Five New Species Marcos .. Museu. de. Zoologia,. Universidade. de. São. Paulo,. Caixa. Postal. 42.494,. 04218 - 970,. São. Paulo,. SP,. Brasil .. E-mail:. mdst @ usp. br. Author Cleva, Régis .. Muséum. national. d’Histoire. naturelle,. Direction. des. Collections,. Crustacés,. case. postale. 53,. 61. rue. Buffon,. 75231. Paris. Cedex. 05,. France .. E-mail:. cleva @ mnhn. fr. Author Contents, Table Of text Papéis Avulsos de Zoologia 2010 São Paulo 2010-12-31 50 9 97 157 http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492010000900001&lng=en&nrm=iso&tlng=en journal article 10.1590/S0031-10492010000900001 1807-0205 Sphaeropeltarion edentatum sp. nov. ( Figures 1D ; 34 A-F; 35A-F) Material examined: . Wallis . and. Futuna . Islands ,. MUSORSTOM. 7,. stn DW. 557,. 11°48.1’S- 178°18.2’W ,.608- 600 m ,. 19 May 1992 ,. holotype ,. ♀ . 44.2 x 39.4 mm .( MNHN-B31974 ) . Description of the holotype : . Carapace. subcircular,. slightly.oblong.axially,.strongly.arched.both.transversally.and.longitudinally,.covered.with.both.thin.coat. of.velvet.and.sparse.short.setae..Front.cut.into.three. short,. spatuliform,. forward. directed. rostral. teeth.. Rostral. teeth. equal. in. length,. tip-rounded,. central. slightly. broader. than. laterals,. each. tooth. ending. in. small,.rounded.granule;.rounded.granule.followed.by. at.least.one.additional.smaller.granule,.barbs.lacking.. Orbits.large,.directed.laterally;.ocular.peduncles.slen- der,. cornea. very. small,. unpigmented.. Orbital. teeth. lacking.barbs,.triangular.in.outline..First.two.supraorbital.and.exorbital.teeth.separated.from.one.another. and.from.lateral.rostral.tooth.by.deep,.wide,.V-shaped. gap;.distance.between.lateral.rostral,.first.two.supraorbital.and.exorbital.teeth.increasing.from.back.to.front.. First.supra-orbital.tooth.broadest,.second.supra-orbital.and.exorbital.teeth.small,.about.same.size..Anterolateral. margin. rounded,. hepatic,. post-hepatic,. and. epibranchial.teeth.reduced.to.single.tubercles;.hepatic. largest,. well. recognizable;. post-hepatic. and. epibranchial. hardly. recognizable,. sided.by.similar.tubercles.. Posterolateral. margin. smooth,. indistinct,. convex,. extending.obliquely.into. posterior.margin.. Posterior. margin.slightly.concave.axially,.weakly.convex.laterally,.bordered.with.row.of.small.granules,.all.about.same. size..Dorsal.surface.of.carapace.smooth,.except.for.few. sparse.granules..Regions.of.carapace.poorly.delimited,. branchio-cardiac. groove. well. recognizable,. weakly. excavated.. Metabranchial. region. smooth,. except. for. few.sparse.granules..Buccal.frame.nearly.rectangular,. somewhat.wider.anteriorly..Insertions.of.mxp3.placed. well.apart. Thoracic . sternum. ovoid,. smooth,. longer. than. wide;.maximum.width.attained.at.segment.5;.segment. 3.with.two.lateral.expansions,.4.traversed.by.strongly. setose.line.at.level.of.P1.coxa,.setae.noticeably.long.. Vulvae.large,.subcircular,.unoperculated,.placed.next. to.the.sternal.suture.5/6. Chelipeds.unequal.in.size,.right.slightly.larger,. homodonts..Dactylus,. propodus,.carpus,. and. merus. smooth,. except. for. few. sparse. granules,. strongly. setose,.setae.long..Cutting.edges.of.fingers.armed.with. low. teeth,. teeth. interfingering.. Pereiopods. smooth,. densely. setose;. dactyli. much. longer. than. propodus,. densely. velvet. all. over,. that. of. P5. additionally. with. long. setae. ventrally;. upper. and. lower. margins. of. merus.of.P2.through.P5.with.long.hairs.on.upper.and. lower.margins. Female.abdomen.of.six.free.segments.and.telson,. segments.smooth,.bordered.by.long.setae. Etymology: .The.specific.name.derives.from.the.Latin. edentatus, . toothless,. in. allusion. to. the. anterolateral. teeth.of.the.carapace.reduced.to.single.tubercles. Remarks: . The. discovery. of. the. male. of. Sphaeropeltarion edentatum .sp. nov..will.permit.additional.taxonomic.details.to.be.added.to.the.original.description. and. probably. show. additional. differences. between. Sphaeropeltarion .and.other.trichopeltariid.genera. Distribution: .The.species. is. so. far. known. only.from. Wallis .and. Futuna .Islands,.600-608.meters.depth. Superfamily Cancroidea Latreille, 1802 Family Atelecyclidae Ortmann, 1893 Type genus: Atelecyclus .Leach,.1814. Genera included: Atelecyclus .Leach,.1814. Emended diagnosis: .Carapace.semi-circular,.moderately.arched.transversally;.its.dorsal.surface.ornamented. with. sparse. granules;. branchio-cardiac. groove. well. recognizable.. Gastric.pits.small,. close. to. each.other.. Hepatic,. first. and. second. epibranchial. teeth. armed. with.small.acute.spines. (barbs),. similar.in. form.and. shape. to. remaining. anterolateral. teeth.. Posterolateral.margin.of.carapace. bordered. with.sinuous.row.of. granules.. Orbit .deeply.excavated,.delimited.superiorly. by.two.supraorbital.teeth,.by.exorbital.tooth.laterally,. by. both. infraorbital. tooth. and. antennal. article. 2+3. inferiorly..Infraorbital.intercalated.piece.absent..Exorbital.and.infraorbital.teeth.separated.from.each.other. and.from.antennal.article.2+3.by.deep,.narrow.notch. Ocular. peduncle. freely. movable,. fully. retractable. into. orbital. cavity,. thick,. and. moderately. calcified..Cornea.large,.little.shorter.than.half.length. of.peduncle,.normally.pigmented.(dark.brown),.ommatidiae.well.recognizable. Antennal.articles.2-3.fused.to.one.another.with. no. trace. of.suture.in. between.and.completely.fused. to. both,. lateral. rostral. tooth. and. infraorbital. tooth.. Antennal. article. 2+3,. immovable,. rather. flattened,. largest.antennal.article.by.far..Antennal.conduit.present.(in. Atelecyclus rotundatus .only)..Articular.condyles. with.antennal.article.4.placed.so.that.fourth.antennal. article.moves.inwards.and.downwards. Mandibular. palp.3-articulated,.all.articles.freely. movable.. Endostome. well. delimited. anteriorly. by. uninterrupted. strong. ridge,. clearly. demarcating. endostome.and.epistome..Endostomial.ridges.inward. directed,.aligned.with.antenna.of.opposite.side..Merus. of.mxp3.elongated,.much.longer.than.wide,.almost.as. long.as.ischium,.its.distal.end. reaching.antennal.article.2+3,.completely.closing.the.prostomial.chamber. FIGURE 34: . Sphaeropeltarion edentatum .gen. nov.,.sp. nov.,.holotype.female.44.2 x 39.4 mm.(MNHN-B31974).. A, Outline.of.anterior. region.of.carapace.in.dorsal.view.. B, Detail.of.anterior.region.of.carapace.in.dorsal.view.. C, Anterior.region.of.body.in.ventral.view.(setae.not. represented).. D, Thoracic .sternum.. E, Left.P5.(setae.not.represented).. F, Left.cheliped.(setae.not.represented)..Ip,.Infraorbital.intercalated. piece. FIGURE 35: . Sphaeropeltarion edentatum .gen. nov.,.sp. nov.,.holotype.female.44.2 x 39.4 mm.(MNHN-B31974).. A, General.dorsal.view.. B, Carapace.in.dorsal.view.. C, Anterior.region.of.carapace.in.dorsal.view.. D, Ventral.view.of.body.and.legs.. E, Detail.of.anterior.region.of. body.in.ventral.view.. F, Thoracic .sternum. Male.and.female.sterno-abdominal.cavity.moderately.excavated;.lateral.borders.of.thoracic.sternite.4. subparallel;.thoracic.sternum.extremely.narrow,.with. subparallel. borders,. only. narrow. stretch. of. sternum. visible.at. each. side. of. abdomen;. sternal. sutures. 4/5,. 5/6,.6/7,.and.7/8.all. complete;.male. sternal. sutures. 5/6.and.6/7.parallel.to.each.other.(sutures.4/5,.5/6,. 6/7,.and.7/8.all.parallel.in.the.female)..Male.and.female. thoracic. sternum. divided. longitudinally. into. two.halves.by.median.line.stretching.uninterruptedly. from.sternite.4.to.8..Male.and.female.sterno-abdominal. cavity. narrow,. V-shaped. along. its. length. from. sternite. 4. throughout. sternite. 8.. Sternal. suture. 1/2. unrecognizable;.suture.2/3.represented.by.narrow.row. of.setae.on.center.of.shield,.between.level.of.arthrodial. cavities.of.mxp2.and.mxp3;.sternal.suture.3/4.recognizable.from.side.to.side,.weak. Pleural.gutter.formed.by.both.Pl7.and.Pl8;.lateral.edges.of.Pl7.and.Pl8.upturned,.coalescent,.forming. narrow,.shallow,.triangular.gutter..Pl7-8. pleurobranchiae. lacking;. Pl6. and. Pl5. with. one. well. developed. pleurobranchia. each;. Pl4,. Pl3. with. two. pleurobranchia.each..Pl2.pleurobranchia.well.developed;.mxp2. podobranchia.reduced.to.few.lamellae. Female.gonopores. located. about.mid-width. of. sternite. 6,. between. sternal. median. line. and. lateral. border.of.sternite. Chelipeds. equal.. Penis. emerging. far. from. P5. coxo-sternal.condyle. Telson.long,.acute..Male.abdomen.of.four.segments. and.telson,.abdominal.segments.3+4+5. fused. together..Complementary.parts.of.abdominal.locking. system.present,.always.functional.