Rhachotropis oweni

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This page should be cited as follows (rationale):
Lörz, Anne-Nina (2015) An enigmatic Rhachotropis (Crustacea: Amphipoda: Eusiridae) from New Zealand. Zootaxa 4006 : 384 – 387, doi. Versioned wiki page: 2017-01-13, version 123569, https://species-id.net/w/index.php?title=Rhachotropis_oweni&oldid=123569 , contributors (alphabetical order): PlaziBot.

Citation formats to copy and paste

BibTeX:

@article{Lörz2015Zootaxa4006,
author = {Lörz, Anne-Nina},
journal = {Zootaxa},
title = {An enigmatic Rhachotropis (Crustacea: Amphipoda: Eusiridae) from New Zealand},
year = {2015},
volume = {4006},
issue = {},
pages = {384 -- 387},
doi = {TODO},
url = {},
note = {Versioned wiki page: 2017-01-13, version 123569, https://species-id.net/w/index.php?title=Rhachotropis_oweni&oldid=123569 , contributors (alphabetical order): PlaziBot.}

}

RIS/ Endnote:

TY - JOUR
T1 - An enigmatic Rhachotropis (Crustacea: Amphipoda: Eusiridae) from New Zealand
A1 - Lörz, Anne-Nina
Y1 - 2015
JF - Zootaxa
JA -
VL - 4006
IS -
UR - http://dx.doi.org/TODO
SP - 384
EP - 387
PB -
M1 - Versioned wiki page: 2017-01-13, version 123569, https://species-id.net/w/index.php?title=Rhachotropis_oweni&oldid=123569 , contributors (alphabetical order): PlaziBot.

M3 - doi:TODO

Wikipedia/ Citizendium:

<ref name="Lörz2015Zootaxa4006">{{Citation
| author = Lörz, Anne-Nina
| title = An enigmatic Rhachotropis (Crustacea: Amphipoda: Eusiridae) from New Zealand
| journal = Zootaxa
| year = 2015
| volume = 4006
| issue =
| pages = 384 -- 387
| pmid =
| publisher =
| doi = TODO
| url =
| pmc =
| accessdate = 2020-11-26

}} Versioned wiki page: 2017-01-13, version 123569, https://species-id.net/w/index.php?title=Rhachotropis_oweni&oldid=123569 , contributors (alphabetical order): PlaziBot.</ref>


Taxonavigation

Ordo: Amphipoda
Familia: Eusiridae
Genus: Rhachotropis

Name

Rhachotropis oweni Lörz, Anne-Nina, 2015Wikispecies linkPensoft Profile

  • Rhachotropis oweni Lörz, Anne-Nina, 2015, Zootaxa 4006: 384-387.

Materials Examined

Material examined. Holotype: NIWA82905, female, 13.6 mm, Clark Seamount, Southern Kermadec Ridge, New Zealand, 36 ° 26 ' 43.08 '' S, 177 ° 50 ' 21.12 ''E, epibenthic sledge, TAN 1206 / 99, 850 – 927 m, 24 April 2012. Paratype: NIWA78497, 17.4 mm, Chatham Rise, New Zealand, 44 ° 46 ' 39.60 ''S, 174 °07' 58.80 ''E, beam trawl, 821–822 m,TAN 1116 / 58, 0 9 November 2011.

Etymology

Etymology.Rhachotropis oweni sp. nov. is named after Owen Anderson, acknowledging his contribution and dedication to New Zealand’s deep-sea fauna.

Diagnosis

Diagnosis. Body delicate, ornamented. Rostrum short. Eyes present, bulging laterally. Humps on head and pereonites. Pereonite 7 nearly as long as body. Pleonite 1 bearing dorsolateral pointed processes, dorsally smooth. Pleonite 2 and 3 bearing dorsolateral pointed processes, and short pointed middorsal process. Telson cleft 10 %, triangular, long and narrow.

Description

Description. Antenna 1 and 2 equal in length. Antenna 1 article 2 slightly shorter than article 1, 2.5 times as long as article 3; flagellum 10 -articulate. Antenna 2 peduncle article 4 and 5 subequal in length, several plumose setae on third article; flagellum 15 -articulate. Mandible with incisor process well developed; lacinia mobilis denticulate; molar process conical; palp article 1 short, about one-third length of article 2, articles 2 and 3 with long slender setae, article 3 nearly as long as article 2. Maxilla 1 inner plate bearing 2 subterminal plumose seta; outer plate with 9 denticulate spines; article 1 of palp with long setae at outer margin, palp article 2 with several slender setae at tip. Maxilla 2 inner and outer plate subequal in length, margins bearing stout and slender setae; inner plate slightly wider than outer plate. Maxilliped outer plate 2.5 times as long as inner plate, reaching half of article 2 of maxillipedal palp. Hypopharynx setose, outer lobes separated by broad gap. Gnathopods similar in shape, subchelate. Gnathopod 1 slightly smaller than gnathopod 2. Gnathopod 1 coxa 1– 4 subquadrate. Gnathopod 1 basis bearing several small spines at anteroventral corner; ischium and merus long setae at posteroventral corner; carpus lobe extending width of propodus, spines at terminal end of lobe; propodus broad, oval; dactylus slender, reaching end of palm. Pereopods 3 and 4 articles long and narrow; carpus, propodus and dactylus similar in length. Pereopod 5 basis with acute posterior margin; pereopod 6 basis similar triangular shape. Pereopod 5 and 6 long, merus slightly inflated. Pereopod 7 longer than pereopod 5 and 6; basis with large rounded extension posteriorly; merus posteroventral angle produced; propodus same length as carpus. Pleopod 2 (right side) rami with 16 and 21 articles, respectively; rami 1.5 times as long as peduncle. Uropod 1 rami shorter than peduncle, outer rami slightly shorter than inner rami. Uropod 2 rami same length; peduncle shorter than ramus. Uropod 3 rami longer than peduncle, inner rami slightly longer than outer rami. Telson more than three times as long as wide, cleft 10 %.


Colour. Eyes cream/white; body light orange; gnathopods dark red.

Distribution

Distribution.New Zealand, Kermadec Ridge and Chatham Rise, 821– 927 m.

Discussion

Remarks.Rhachotropis oweni sp. nov. from New Zealand differs from all other 60Rhachotropis species by the combination of following characters: long dorsolateral projections on pereonites 1–3; pereonite 1 dorsally smooth; eyes present; mid-dorsal protuberances on head and pleonites; unproduced coxa 1, pleopod 5 and 6 basis triangular, pereopod 7 basis with large rounded extension.

Taxon Treatment

  • Lörz, Anne-Nina; 2015: An enigmatic Rhachotropis (Crustacea: Amphipoda: Eusiridae) from New Zealand, Zootaxa 4006: 384-387. doi
Link to Plazi.org

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