Trichopeltarion dextrum (Rathbun, 1898), 2010

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 : 130-132

publication ID	https://doi.org/ 10.1590/S0031-10492010000900001
persistent identifier	https://treatment.plazi.org/id/03D8DB34-FF8A-FFFD-FF66-6A4BFE58FE12
treatment provided by	Felipe
scientific name	Trichopeltarion dextrum (Rathbun, 1898)
status	comb. nov.

Treatment

Trichopeltarion dextrum (Rathbun, 1898) View in CoL

comb. nov.

( Figures 18 View FIGURE 18 A-D)

Hypopeltarium dextrum . Rathbun,. 1898a:277,. pl. 6,. fig. 2.

Peltarion dextrum . –. Rathbun,. 1930:161;. Soto. 1979:165;. Salva. &. Feldmann,. 2001:51;. Ng. et al.,.2008:51.

Material examined:. Mexico,. Yucatan,.off.Cozumel . Island,. Albatross ,. stn 2359,. 20°19’10”N- 87°03’30”W,. 29 Jan 1885,. 422.4 m:. holotype.male.42.0 x 36.5 mm. ( USNM.9558) GoogleMaps .

Remarks: Trichopeltarion dextrum . (Rathbun,. 1898). was.originally. described. in.the. genus. Hypopeltarium . Miers,1886. (objective. synonym. of. and. unjustified. replacement.name.for. Peltarion .Hombron.&.Jacquinot,. 1846).. Rathbun. (1898a:277). pointed. out. that. Peltarion dextrum .differs.from. Peltarion spinulosum .(as. Hypopeltarium spinulosum ).in.its.strongly.pronounced. heterochely. (less.developed. in. P. spinulosum ).and. its. abdomen. of. six. free. segments. and. telson. (abdominal.segments.3,.4,. and. 5.fused. together.in. P. spinulosum ),. at. which. points. it. resembles. Trichopeltarion . . Salva.&.Feldmann.(2001:51).remarked.that. Peltarion dextrum . is. similar. to. Trichopeltarion . in. respect. to. the.orbital.and.anterolateral.spines..Tavares.&.Melo. (2005:240-241).commented.on.a.number.of.similarities.between. Peltarion dextrum .and. Trichopeltarion .not. shared.with. Peltarion spinulosum ,.and.have.called.for. a.re-evaluation.of.the.systematic.position.of. Peltarion dextrum . . Peltarion dextrum .is.herein.transferred.to.the. genus. Trichopeltarion ,.with.which. it.shares.a.unique. combination.of.characters.including:.(i) antennal.setae. dispersed.all.around.antennal.peduncle.(articles.2+3,. 4-5).and.flagellae,.setae.of.opposing.sides.of.flagellum. forming. incipient. antennal. conduit. at. most. (dorsal. and.ventral.faces.of.antennae.fringed.along.its.entire. length. by. a. row. of. long. setae. forming. an. antennal. conduit.in. Peltarion );.(ii) infraorbital.tooth.separated. from.the.antennal.segments.2+3.by.a.deep,.wide.gap. (infraorbital.tooth.and.antennal.articles.2+3.separated. from.each.other.by.a.deep,.narrow.notch.in. Peltarion );. (iii) antennal.articles.2+3.in.close.contact.to.but.not. fused.with.the.lateral.rostral.tooth.(a.noticeable.gap. between.the.antennal.articles.2+3.and.the.lateral.rostral.tooth.in. Peltarion );.(iv) antennal.articles.2+3,.4,. and.5.of.about.the.same.length.(fourth.antennal.article.distinctly.longer.in. Peltarion );.(v) mandibular.palp. 2-articulated,.with.article.1-2.completely.fused.to.one. another.and.no.line.of.suture.in.between.(mandibular. palp. 3-articulated. in. Peltarion );.(vi) Pl3. pleurobranchiae.two,.anteriormost.shorter.(both.Pl3.pleurobranchiae.equally.developed.in. Peltarion );.(vii) male.abdomen.of.six.free.segments.and.telson.(male.abdomen. of.four.segments. and. telson. as. abdominal. segments. 3+4+5. are. fused. together. in. Peltarion );. (viii) telson. not.intercalated.within. abdominal.segment.6.as.the. postero-lateral.angles.of.that.segment.is.only.weakly. protruded.(anterolateral.angles.of.abdominal.segment. 6. strongly. protruded. forward. so. the. telson. show. as. narrow.triangle.intercalated.in.between.in. Peltarion ).