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 Trichopeltarion parvum sp. nov. ( Figures 27 A-F; 28A-B) Material examined: . Solomon. Islands ,. SALOMON. 2,. Alis , . stn CP 2228,. 06°34.7’S- 156°10.5’E ,. 609-625 m ,. Bouchet. et al. . coll.. Nov 2004 :. holotype . ♀ . 11.5 x 10.5 mm . ( MNHN-B31972 );. Solomon. Islands ,. SALOMONBOA. 3,. stn CP 2825,. 10°25’S- 162°02’E ,. 532-883 m ,. Richer. de. Forges. &. Boisselier. coll.,. 20 Sep 2007 ,. 1 ♀ . 21.5 x 19.9 mm . ( MNHN-B32398 ) . Type locality: . Solomon.Islands ,. 06°34.7’S- 156°10.5’E ,. 609-625 m . Description of the holotype : .Small. Trichopeltarion . .Carapace.pentagonal,.distinctly.longer.than.wide,.slightly. arched.transversally,.moderately.arched.longitudinally,.entirely.covered.with.serrate.setae..Front.cut.into. three. prominent,. forward. directed,. slightly. curved. downward. teeth.. Frontal. teeth. bordered. with. setae,. devoid. of. barbs;. central. tooth. spatuliform. in. dorsal. view,.tip.rounded,.longer.than.laterals;.lateral.rostral. teeth. acute,. reaching. to. little. more. than. two-thirds. of. central. tooth.length..Orbits. small,. directed. laterally;.ocular.peduncles.short,.freely.movable,.not.fully. retractable.into.orbital.cavity;.cornea.small,.nearly.unpigmented..Orbital.teeth.weak,.lobe-like,.barbs.lacking..Innerorbital.low,.triangular.in.dorsal.view,.separated.from.lateral.rostral.tooth.by.shallow,.U-shaped. gap;.innerorbital.and.second.supraorbital.teeth.separated.from.each.other.by.V-shaped,.shallow.gap;.second.supraorbital.shortest,.showing.as.a.boss.dorsally,. almost.entirely.fused.to.the.exorbital.tooth;.exorbital. tooth.wide.triangular.in.dorsal.view,.ending.in.small. acute. tubercle,. with. distinct. dorsal. bump.. Hepatic,. first,.and.second.epibranchial,.and.first.metabranchial. teeth. distinct,. progressively. decreasing. in. size. from. front.to.back,.barbs.lacking..Hepatic.tooth.strongest,. curved. forward,. ending. in. small,. rounded. tubercle;. first.epibranchial.tooth.directed.outwards,.ending.in. two,. small,. rounded. tubercles;. second. epibranchial. tooth. showing. as. large. boss. crested. with. one. small,. rounded. tubercle;. first. metabranchial. showing. as. smooth,. small. boss.. Posterior. margin. only. slightly. concave. axially,. smooth. except. for. row. of. minute. granules,.more.developed.laterally..Carapace.grooves. shallow,.little.distinct..Hepatic,.gastric,.and.epibranchial.regions.swollen,.smooth. FIGURE 24: . Trichopeltarion paradextrum . sp. nov.. A-B, Holotype. male. 29.2 x 25.0 mm. (ZRC.2002-0635).. A, General. dorsal. view.. B, Anterior.region.of.carapace.in.dorsal.view. FIGURE 25: . Trichopeltarion paradextrum .sp. nov.,.paratype.male.22.0 x 18.8 mm.(ZRC.2001-0501). Thoracic .sternum.smooth,. sparsely.pilose.. Pair. of. tubercles. of. abdominal. locking. system. distinct,. placed.near.sternal.suture.5/6. Chelipeds. equal. in. size. and. shape,. densely. pilose.. Dactylus. delicate,. regularly. and. gently. curved. downward;.densely.setose.dorsally,.smooth,.except.for. few,.sparse.tubercles;.sulcated.along.lateral.and.mesial. sides,.sulci.densely.setose;.cutting.edge.with.low.teeth.. Fixed.finger.almost.straight,.curved.upwards.distally;. sulcated. along. lateral. and. mesial. sides,.sulci.densely. setose.. Carpus. smooth. dorsally,. lateral. surface. with. sparse.tubercles;.inner.anterolateral.angle.with.acute. tooth.. P2-5. densely. setose;. dactili. markedly. longer. than.propodi;.P5.merus-carp.articulation.reaching.to. second.epibranchial.tooth. Female. abdomen. of. six. free. segments. and. telson;. telson. and. segments. sparsely. setose,. smooth.. Complementary. parts. of. abdominal. locking. system. present,.functional. Etymology: .The.specific.name.comes.from.the.Latin,. neuteur.adjective. parvum , .meaning.small. Remarks: Trichopeltarion parvum .sp. nov.. is.most.different. from.the. remaining. species. in. the. genus.. It. is. distinguished.from.its.congeners.by.a.unique.suite.of. characters.which.include.carapace.pentagonal,.almost. completely.smooth;.carapace.grooves.shallow,.little.distinct;.hepatic,.gastric,. and.epibranchial. regions.swollen;.orbital.teeth.weak,.lobe-like;.innerorbital.low,.separated.from.lateral.rostral.tooth.by.shallow,.U-shaped. gap;.innerorbital.and. second.supraorbital. teeth.separated.from.each.other.by.V-shaped,.shallow.gap;.second.supraorbital.shortest,.almost.entirely.fused.to.the. exorbital.tooth;.hepatic,.first,.and.second.epibranchial,. and.first.metabranchial.teeth.distinct,.progressively.decreasing.in.size.from.front.to.back,.barbs.lacking. Distribution: .Known.only.from.the.Solomon.Islands,. between.532.and.883.meters.depth.