On two species of diastylis (Cumacea) from the southwestern atlantic: D. sexpectinata n. sp. and D. hammoniae zimmer, 1902

Diastylis sexpectinata, a new species of cumacean that extends from São Paulo State (Brazil) to northern Patagonia (Argentina), is herein fully described and illustrated. This species can be easily distinguished from the other members of the genus by the following combination of characters: 1) carap...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Alberico, N.A., Roccatagliata, D.
Formato: JOUR
Materias:
Cumacea
Diastylis
South-West Atlantic
taxonomy
Leptostylis
Uropoda
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02780372_v31_n1_p192_Alberico
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02780372_v31_n1_p192_Alberico
record_format dspace
spelling todo:paper_02780372_v31_n1_p192_Alberico2023-10-03T15:16:54Z On two species of diastylis (Cumacea) from the southwestern atlantic: D. sexpectinata n. sp. and D. hammoniae zimmer, 1902 Alberico, N.A. Roccatagliata, D. Cumacea Diastylis South-West Atlantic taxonomy Cumacea Diastylis Leptostylis Uropoda Diastylis sexpectinata, a new species of cumacean that extends from São Paulo State (Brazil) to northern Patagonia (Argentina), is herein fully described and illustrated. This species can be easily distinguished from the other members of the genus by the following combination of characters: 1) carapace with a pair of anterolateral horns and six longitudinal rows of conical teeth (middle and uppermost rows poorly developed or absent in the adult male), 2) third and fourth pereiopods of the female without rudimentary exopods, and 3) uropod endopod consisting of two articles, the proximal one in the female with 3-4 teeth on outer margin. The description of the female of Diastylis hammoniae is completed and the adult male described for the first time based on its type material and additional specimens herein reported. The type species of Leptostylis (?) mancoides was also re-examined and its synonymy with Diastylis hammoniae is proposed. The synonymy of D. hammoniae with Diastylis manca is also strongly suspected, but until additional specimens become available D. manca should be treated as "species inquirenda." An identification key to the species of the genus Diastylis from Argentina and Uruguay is given. © The Crustacean Society. Fil:Alberico, N.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Roccatagliata, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02780372_v31_n1_p192_Alberico
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cumacea
Diastylis
South-West Atlantic
taxonomy
Cumacea
Diastylis
Leptostylis
Uropoda
spellingShingle Cumacea
Diastylis
South-West Atlantic
taxonomy
Cumacea
Diastylis
Leptostylis
Uropoda
Alberico, N.A.
Roccatagliata, D.
On two species of diastylis (Cumacea) from the southwestern atlantic: D. sexpectinata n. sp. and D. hammoniae zimmer, 1902
topic_facet Cumacea
Diastylis
South-West Atlantic
taxonomy
Cumacea
Diastylis
Leptostylis
Uropoda
description Diastylis sexpectinata, a new species of cumacean that extends from São Paulo State (Brazil) to northern Patagonia (Argentina), is herein fully described and illustrated. This species can be easily distinguished from the other members of the genus by the following combination of characters: 1) carapace with a pair of anterolateral horns and six longitudinal rows of conical teeth (middle and uppermost rows poorly developed or absent in the adult male), 2) third and fourth pereiopods of the female without rudimentary exopods, and 3) uropod endopod consisting of two articles, the proximal one in the female with 3-4 teeth on outer margin. The description of the female of Diastylis hammoniae is completed and the adult male described for the first time based on its type material and additional specimens herein reported. The type species of Leptostylis (?) mancoides was also re-examined and its synonymy with Diastylis hammoniae is proposed. The synonymy of D. hammoniae with Diastylis manca is also strongly suspected, but until additional specimens become available D. manca should be treated as "species inquirenda." An identification key to the species of the genus Diastylis from Argentina and Uruguay is given. © The Crustacean Society.
format JOUR
author Alberico, N.A.
Roccatagliata, D.
author_facet Alberico, N.A.
Roccatagliata, D.
author_sort Alberico, N.A.
title On two species of diastylis (Cumacea) from the southwestern atlantic: D. sexpectinata n. sp. and D. hammoniae zimmer, 1902
title_short On two species of diastylis (Cumacea) from the southwestern atlantic: D. sexpectinata n. sp. and D. hammoniae zimmer, 1902
title_full On two species of diastylis (Cumacea) from the southwestern atlantic: D. sexpectinata n. sp. and D. hammoniae zimmer, 1902
title_fullStr On two species of diastylis (Cumacea) from the southwestern atlantic: D. sexpectinata n. sp. and D. hammoniae zimmer, 1902
title_full_unstemmed On two species of diastylis (Cumacea) from the southwestern atlantic: D. sexpectinata n. sp. and D. hammoniae zimmer, 1902
title_sort on two species of diastylis (cumacea) from the southwestern atlantic: d. sexpectinata n. sp. and d. hammoniae zimmer, 1902
url http://hdl.handle.net/20.500.12110/paper_02780372_v31_n1_p192_Alberico
work_keys_str_mv AT albericona ontwospeciesofdiastyliscumaceafromthesouthwesternatlanticdsexpectinatanspanddhammoniaezimmer1902
AT roccatagliatad ontwospeciesofdiastyliscumaceafromthesouthwesternatlanticdsexpectinatanspanddhammoniaezimmer1902
_version_ 1782026355886522368

Ejemplares similares