Pteropeltarion Dell, 1972

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

Pteropeltarion Dell, 1972

Pteropeltarion . Dell,. 1972:55. [type. species:. Pteropeltarion novaezelandiae . Dell,. 1972,. by. original. designation..Gender.neuter].

Species included: Pteropeltarion novaezelandiae . Dell,. 1972.

Emended diagnosis:. Carapace. pear-shaped,. its. dorsal. surface. finely. granulated;. branchio-cardiac. groove. well. formed.. Gastric. pits. poorly. excavated,. close. to. each. other.. Hepatic. tooth. reduced. to. a. bump;. first. epibranchial.tooth.absent;.second.epibranchial.tooth. extremely.long,.strong,. forward. directed..Posterolateral.margin.of.carapace.well.delimited..Front.cut.into. three. teeth;. central. rostral. tooth. much. shorter. than. laterals.. 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,. narrow. notch.. Orbital. cavity. very. shallow.. Ocular.peduncle.noticeably.long.and.slender.(globulous. proximally),. strongly. calcified,. little. movable,. not.fully.retractable.into.orbital.cavity..Cornea.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.the.intercalated.piece.basally;.wide.gap.between.antennal.article.2+3.and.lateral.rostral.tooth..Antennal. article. 2+3-4. cylindrical. of. about. same. length;. fifth. longest.. Antennal. flagellum. moderately. long,. less. than.half.of.maximum.carapace.length;.articles.moderately.large..Dorsal.and.ventral.faces.of.the.antennae. (articles.2+3,.4-5,.and.flagellum).fringed.along.entire. length.by.two.rows.of.noticeably.long.setae;.setae.of. opposing.rows.juxtapose,.forming.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,.slightly.shorter.than.ischium,. its. distal. end. reaching. to. antennal. article. 1.. Sternal. median. line. only. on. sternites. 7. and. 8..Edge.of. last. thoracic.pleurite.lunate.pleural.gutter.noticeably.low.. Two.well.developed.Pl3.pleurobranchiae;.Pl2.pleurobranchia. and. mxp2. podobranchia. lacking.. Heterochely. very. pronounced. in. males.. Male. and. female. abdomen. of.six. segments.and.telson;. postero-lateral. angles.of.segment. 6. only. weakly.produced. forward;. telson.not.intercalated.within.abdominal.segment.6.. Abdominal.locking.system.functional.only.in.males,. thoracic.sternal.button.placed.far.from.thoracic.sternal.suture.5/6,.absent.in.young.females.

Material examined:. South.of.New.Zealand,.New.Zealand.Plateau,.“D.. Mendeleev”,.stn 1277,. 51°00.8’S- 169°59.5’E,. 570 m,. Zarenkov. leg.,. 4 ♂♂.7.8 x 10.5. (estimated,. right. epibranchial. tooth. blunt). mm. to. 14.6 x 20.8 mm,. 7 ♀♀.7.2 x 9.0.to.16.5 x 21.5 mm,. 1.juvenile.( MNHN-B27885 ) .

Remarks:. Although. not. mentioned. nor. illustrated. by. Dell. (1972:. fig. 9),. the. infraorbital. intercalated. piece. is. well. distinct. in. Pteropeltarion novazelandiae . (figure 11A-C).