Two new cumaceans (Crustacea: Peracarida) from the South-West Atlantic with remarks on the problematic genus Holostylis Stebbing, 1912

In 1912-13, Stebbing erected the genera Holostylis and Ekdiastylis for those diastylids with the endopod of the uropods being one- and two-segmented, respectively. The validity of the genus Holostylis is still controversial and the genus Ekdiastylis continues to be suppressed. In the present contrib...

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Detalles Bibliográficos
Autores principales: Roccatagliata, D., Alberico, N.A.
Formato: JOUR
Materias:
Argentina
Cumacea
Diastylis
Holostylis
New species
antenna
body size
crustacean
morphology
new species
taxonomy
Atlantic Ocean
Atlantic Ocean (Southwest)
Crustacea
Diastylidae
Peracarida
Uropoda
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_18671616_v46_n1_p163_Roccatagliata
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_18671616_v46_n1_p163_Roccatagliata
record_format dspace
spelling todo:paper_18671616_v46_n1_p163_Roccatagliata2023-10-03T16:33:47Z Two new cumaceans (Crustacea: Peracarida) from the South-West Atlantic with remarks on the problematic genus Holostylis Stebbing, 1912 Roccatagliata, D. Alberico, N.A. Argentina Cumacea Diastylis Holostylis New species antenna body size crustacean morphology new species taxonomy Argentina Atlantic Ocean Atlantic Ocean (Southwest) Crustacea Cumacea Diastylidae Diastylis Holostylis Peracarida Uropoda In 1912-13, Stebbing erected the genera Holostylis and Ekdiastylis for those diastylids with the endopod of the uropods being one- and two-segmented, respectively. The validity of the genus Holostylis is still controversial and the genus Ekdiastylis continues to be suppressed. In the present contribution, two new diastylids are fully described and illustrated: one of them has the endopod of the uropod one-segmented, Holostylis uniramosa n. sp., and the other has the endopod of the uropod two-segmented, Diastylis decalineata n. sp. The genus Holostylis has currently three nominal species, which are easily distinguished from each other by the number of thoracic appendages with fully developed exopods in females: three in H. helleri (Zimmer, 1908), one in H. spinicuadata Błażewicz-Paszkowycz and Heard, 2005, and none in H. uniramosa n. sp. The validity of genus Holostylis is confirmed and its diagnosis emended. Diastylis decalineata n. sp. mainly distinguished from the other species of Diastylis with two-segmented uropod endopods by the shape and sculpture of its carapace. © 2015, Senckenberg Gesellschaft für Naturforschung and Springer-Verlag Berlin Heidelberg. Fil:Roccatagliata, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Alberico, N.A. 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_18671616_v46_n1_p163_Roccatagliata
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentina
Cumacea
Diastylis
Holostylis
New species
antenna
body size
crustacean
morphology
new species
taxonomy
Argentina
Atlantic Ocean
Atlantic Ocean (Southwest)
Crustacea
Cumacea
Diastylidae
Diastylis
Holostylis
Peracarida
Uropoda
spellingShingle Argentina
Cumacea
Diastylis
Holostylis
New species
antenna
body size
crustacean
morphology
new species
taxonomy
Argentina
Atlantic Ocean
Atlantic Ocean (Southwest)
Crustacea
Cumacea
Diastylidae
Diastylis
Holostylis
Peracarida
Uropoda
Roccatagliata, D.
Alberico, N.A.
Two new cumaceans (Crustacea: Peracarida) from the South-West Atlantic with remarks on the problematic genus Holostylis Stebbing, 1912
topic_facet Argentina
Cumacea
Diastylis
Holostylis
New species
antenna
body size
crustacean
morphology
new species
taxonomy
Argentina
Atlantic Ocean
Atlantic Ocean (Southwest)
Crustacea
Cumacea
Diastylidae
Diastylis
Holostylis
Peracarida
Uropoda
description In 1912-13, Stebbing erected the genera Holostylis and Ekdiastylis for those diastylids with the endopod of the uropods being one- and two-segmented, respectively. The validity of the genus Holostylis is still controversial and the genus Ekdiastylis continues to be suppressed. In the present contribution, two new diastylids are fully described and illustrated: one of them has the endopod of the uropod one-segmented, Holostylis uniramosa n. sp., and the other has the endopod of the uropod two-segmented, Diastylis decalineata n. sp. The genus Holostylis has currently three nominal species, which are easily distinguished from each other by the number of thoracic appendages with fully developed exopods in females: three in H. helleri (Zimmer, 1908), one in H. spinicuadata Błażewicz-Paszkowycz and Heard, 2005, and none in H. uniramosa n. sp. The validity of genus Holostylis is confirmed and its diagnosis emended. Diastylis decalineata n. sp. mainly distinguished from the other species of Diastylis with two-segmented uropod endopods by the shape and sculpture of its carapace. © 2015, Senckenberg Gesellschaft für Naturforschung and Springer-Verlag Berlin Heidelberg.
format JOUR
author Roccatagliata, D.
Alberico, N.A.
author_facet Roccatagliata, D.
Alberico, N.A.
author_sort Roccatagliata, D.
title Two new cumaceans (Crustacea: Peracarida) from the South-West Atlantic with remarks on the problematic genus Holostylis Stebbing, 1912
title_short Two new cumaceans (Crustacea: Peracarida) from the South-West Atlantic with remarks on the problematic genus Holostylis Stebbing, 1912
title_full Two new cumaceans (Crustacea: Peracarida) from the South-West Atlantic with remarks on the problematic genus Holostylis Stebbing, 1912
title_fullStr Two new cumaceans (Crustacea: Peracarida) from the South-West Atlantic with remarks on the problematic genus Holostylis Stebbing, 1912
title_full_unstemmed Two new cumaceans (Crustacea: Peracarida) from the South-West Atlantic with remarks on the problematic genus Holostylis Stebbing, 1912
title_sort two new cumaceans (crustacea: peracarida) from the south-west atlantic with remarks on the problematic genus holostylis stebbing, 1912
url http://hdl.handle.net/20.500.12110/paper_18671616_v46_n1_p163_Roccatagliata
work_keys_str_mv AT roccatagliatad twonewcumaceanscrustaceaperacaridafromthesouthwestatlanticwithremarksontheproblematicgenusholostylisstebbing1912
AT albericona twonewcumaceanscrustaceaperacaridafromthesouthwestatlanticwithremarksontheproblematicgenusholostylisstebbing1912
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