Trichopeltarion A. Milne-Edwards, 1880

Tavares, Marcos & Cleva, Régis, 2010, Trichopeltariidae (Crustacea, Decapoda, Brachyura), A New Family And Superfamily Of Eubrachyuran Crabs With Description Of One New Genus And Five New Species, Papéis Avulsos de Zoologia (São Paulo) 50 (9), pp. 97-157 : 122-124

Trichopeltarion A. Milne-Edwards, 1880

Trichopeltarion . A.. Milne-Edwards,. 1880:19,. pl. 2,. fig. 1-5. [type. species:. Trichopeltarion nobile . A.. Milne-Edwards,. 1880,. by. monotypy.. Gender. neuter].

Trachycarcinus .Faxon,.1893:156.[type.species:. Trachycarcinus corallinus . Faxon,. 1893,. by. monotypy.. Gender.masculine].

Trichopeltarium.Alcock,.1899a:57.[unjustified.emendation. of. Trichopeltarion . A.. Milne-Edwards,. 1880.

Trichopeltarium. –. Alcock,. 1899b:99;. Alcock. &. Anderson,.1899a:10.

Krunopeltarion . Števčić,. 1993:1097. [type. species:. Krunopeltarion timorense .Števčić,.1993,.by.original.designation].

Included species:. Twenty-three. recent. species. are. known. so. far. in.the.genus. Trichopeltarion . .They.are. as. follows: Trichopeltarion alcocki .Doflein,. in.Chun,. 1903;. Trichopeltarion balssi .(Rathbun,.1932);. Trichopeltarion corallinum . (Faxon,. 1893);. Trichopeltarion crosnieri . (Guinot,. 1986);. Trichopeltarion dejouanneti . sp. nov.;. Trichopeltarion dextrum . (Rathbun,. 1898). comb. nov.;. Trichopeltarion elegans .(Guinot.&.Sakai,. 1970). comb. nov.;. Trichopeltarion fantasticum .Richardson. &. Dell,. 1964;. Trichopeltarion glaucus . (Alcock.&.Anderson,.1899);. Trichopeltarion hystricosum . (Garth,. in. Garth. &. Haig,. 1971);. Trichopeltarion intesi . (Crosnier,. 1981);. Trichopeltarion janetae . Ahyong,. 2008;. Trichopeltarion moosai . (Guinot,. 1989). comb. nov.;. Trichopeltarion nobile .A..Milne-Edwards,. 1880;. Trichopeltarion ovale . Anderson,. 1896;. Trichopeltarion parvum .sp. nov.;. Trichopeltarion paradextrum . sp. nov.;. Trichopeltarion pezzutoi . Tavares. &. Melo,. 2005;. Trichopeltarion sagamiensis . (Rathbun,. 1932);. Trichopeltarion spinulifer .(Rathbun,.1898);. Trichopeltarion timorense .(Števčić,.1993).comb. nov.;. Trichopeltarion wardi .Dell,.1968;. Trichopeltarion vanuatuensis . sp. nov.

Emended diagnosis:.Carapace.either.pentagonal.or.subcircular,.distinctly.arched.transversally;.its.dorsal.surface. ornamented. with. granules,. coalescent. tubercles. or.a.combination.of.the.two;.branchio-cardiac.groove. deeply. excavated.. Gastric. pits. deep,. close. to. each. other.. Hepatic,. first. and. second. epibranchial. teeth. usually.well.distinct.and.armed.with.barbs..Posterolateral.margin.of.carapace.either.well.or.poorly.delimited.. Front.cut.into.three.teeth;.central.rostral.tooth. either.shorter,.longer.or.as.long.as.lateral.teeth.. Orbit . delimited.superiorly.by.two.supraorbital.teeth;.laterally.by.exorbital.tooth,.inferiorly.by.infraorbital.tooth. and. antennal. article. 2+3.. Exorbital. and. infraorbital.

teeth.separated.by.deep,.wide.gap;.infraorbital.tooth. and.antennal.article.2+3.separated.by.deep,.wide.gap.. Orbital. cavity. deeply. excavated.. Ocular. peduncle. usually. little. movable,. not. fully. retractable. into. the. orbital.cavity,.noticeably.long.and.slender.(globulous. proximally),.strongly.calcified..Cornea.usually.small,. unpigmented,. ommatidiae. hardly. recognizable.. Antennal.article. 1. slightly. transversally. oblong;. articles. 2-3.fused.to.one.another.with.no.trace.of.suture. in. between..Antennal.article.2+3.hardly.movable,.fused. to.intercalated.piece.basally,.in.close.contact.but.not. fused. with. lateral. rostral. tooth.. Antennal. articles. 2+3-5.cylindrical,.antennal.article.5.shorter.than.articles.2+3.and.4..Antennal.setae.dispersed.all.around. antennal. articles.and.flagellae. (not. fringed);. setae. of. opposing. sides. forming. incipient. antennal. conduit.. Mandibular.palp.2-articulated,.articles.1-2.completely.fused.together,.immovable.in.relation.to.each.other;. no.line.of.suture.between.articles.1-2..Limit.between. endostome.and.epistome.poorly.recognizable..Endostomial.ridges.strong,.straight,.inward.directed..Merus. of.mxp3.operculiform,.much.shorter.than.ischium,.its. distal.end.not.reaching.to.antennal.article.1..Sternal. median. line. only. on. sternites. 7. and. 8..Edge. of.last. thoracic.pleurite.lunate,.pleural.gutter.well.developed.. Pl8.gutter.edge.well.developed..Pl4-3.with.two,.well. developed.pleurobranchiae.each;.Pl3.pleurobranchiae. shorter.than.Pl4-6.pleurobranchiae,.anteriormost.Pl3. pleurobranchia.shortest..Pl2.with.one,.well.developed. pleurobranchia;.mxp2.with.one,.well.developed.podobranchia..Both.heterochely.and.heterodonty.strongly. developed,.resulting.in.gap.between.complementary. parts.of.press-button.abdominal. locking. mechanism. on.major.cheliped.side.in.large.individuals..Male.and. female.abdomen.of.six.segments.and.telson;.posterolateral.angles.of.segment.6.only.weakly.produced.forward;. telson. not. intercalated.within.abdominal. segment.6.. Thoracic .sternal.button.of.abdominal.locking. system.far.from.sternal.suture.5/6.

Remarks:. The. genus. Krunopeltarion . Števčić,. 1993. is. herein. merged. into. the. synonymy. of. Trichopeltarion . A.. Milne-Edwards,. 1880.. Števčić. (1993:1101). provided.four.distinguishing.characters.for. Krunopeltarion ,.which.are.either.species-specific.(carapace.covered. with.smooth,.glossy,.apically.rounded,.ivory-yellow.tubercles;.lateral.teeth.relatively.short.and.triangular.with. very.wide.bases,.their.apices.elongated.and.narrowed. distally,.tips.not.sharply.pointed).or.are.shared.with.the. remaining. trichopeltariid. genera. (surface. of. carapace. with.several.pairs.of.distinct.grooves.and.one.unpaired. postfrontal.groove;.sternal.sutures.4/5.to.6/7.are.interrupted,.suture.7/8.entirely)..Actually.in. Trichopeltarion timorense ,. as. well. as. in. all. trichopeltariids,. only. the. sternal. sutures. 4/5. and. 5/6. are. interrupted,. whereas. the. sutures. 6/7. and. 7/8. are. complete. (figures 31D).. The.discovery. of.the. male. (see. under. Trichopeltarion timorense ). further. confirms. Trichopeltarion timorense . as.a.typical.representative.of.the.genus. Trichopeltarion .

Faxon.(1893).erected. Trachycarcinus .for.a.single. species,. T. corallinus . . He. compared. his. new. genus. with. Telmessus .( Cheiragonidae ).and. Peltarion .(as. Hypopeltarium ),. pointing. out. a. number. of. differences. between.them..In.the.year.1893. Trichopeltarion nobile . A.. Milne-Edwards,. 1880,. was. the. only. known. representative. of. Trichopeltarion . . Should. Faxon. (1893). had.compared.his.species.to. Trichopeltarion nobile .he. would.certainly.refrain.from.erecting. Trachycarcinus ,. as. all. distinguishing. characters. proposed. for. Trachycarcinus .were.actually.also.found.in. Trichopeltarion .