On two South-West Atlantic Diastylis (Cumacea: Crustacea), D. obliquisulcata n. sp. and D. geocostae, with remarks on this speciose genus

A new species, Diastylis obliquisulcata from eastern Patagonia, is fully described and illustrated based on specimens collected in shallow waters. Diastylis obliquisulcata shares with 14 other species of this genus an opercular maxilliped 3, a short telson and rudimentary exopods on pereopods 3 and...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Alberico, N.A., Roccatagliata, D.
Formato:	JOUR
Materias:	Diastylidae New species Ontogenetic changes Taxonomy Crustacea Cumacea Diastylis Uropoda anatomy and histology animal animal dispersal animal structures Argentina classification female male Animal Distribution Animal Structures Animals Female Male
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_11755326_v3640_n1_p1_Alberico
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_11755326_v3640_n1_p1_Alberico
record_format	dspace
spelling	todo:paper_11755326_v3640_n1_p1_Alberico2023-10-03T16:08:11Z On two South-West Atlantic Diastylis (Cumacea: Crustacea), D. obliquisulcata n. sp. and D. geocostae, with remarks on this speciose genus Alberico, N.A. Roccatagliata, D. Diastylidae New species Ontogenetic changes Taxonomy Crustacea Cumacea Diastylidae Diastylis Uropoda anatomy and histology animal animal dispersal animal structures Argentina classification Crustacea female male Animal Distribution Animal Structures Animals Argentina Crustacea Female Male A new species, Diastylis obliquisulcata from eastern Patagonia, is fully described and illustrated based on specimens collected in shallow waters. Diastylis obliquisulcata shares with 14 other species of this genus an opercular maxilliped 3, a short telson and rudimentary exopods on pereopods 3 and 4 in the females. Diastylis obliquisulcata can be easily distinguished from all these species by the females having an oblique groove or sulcus on each side of the carapace. The taxo-nomic position of this group of species in the genus Diastylis is discussed. The adult male of Diastylis geocostae is described for the first time, the adult female briefly redescribed, and its distribution, up to now known from the type locality only (Cabo Frio, Rio de Janeiro State), is extended to off Rawson, Argentina. Within this species there are reported ontogenetic changes in the carapace ornamentation, in the chaetotaxy of the telson, and in the length ratio between the telson and the uropod peduncle. Copyright © 2013 Magnolia Press. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11755326_v3640_n1_p1_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	Diastylidae New species Ontogenetic changes Taxonomy Crustacea Cumacea Diastylidae Diastylis Uropoda anatomy and histology animal animal dispersal animal structures Argentina classification Crustacea female male Animal Distribution Animal Structures Animals Argentina Crustacea Female Male
spellingShingle	Diastylidae New species Ontogenetic changes Taxonomy Crustacea Cumacea Diastylidae Diastylis Uropoda anatomy and histology animal animal dispersal animal structures Argentina classification Crustacea female male Animal Distribution Animal Structures Animals Argentina Crustacea Female Male Alberico, N.A. Roccatagliata, D. On two South-West Atlantic Diastylis (Cumacea: Crustacea), D. obliquisulcata n. sp. and D. geocostae, with remarks on this speciose genus
topic_facet	Diastylidae New species Ontogenetic changes Taxonomy Crustacea Cumacea Diastylidae Diastylis Uropoda anatomy and histology animal animal dispersal animal structures Argentina classification Crustacea female male Animal Distribution Animal Structures Animals Argentina Crustacea Female Male
description	A new species, Diastylis obliquisulcata from eastern Patagonia, is fully described and illustrated based on specimens collected in shallow waters. Diastylis obliquisulcata shares with 14 other species of this genus an opercular maxilliped 3, a short telson and rudimentary exopods on pereopods 3 and 4 in the females. Diastylis obliquisulcata can be easily distinguished from all these species by the females having an oblique groove or sulcus on each side of the carapace. The taxo-nomic position of this group of species in the genus Diastylis is discussed. The adult male of Diastylis geocostae is described for the first time, the adult female briefly redescribed, and its distribution, up to now known from the type locality only (Cabo Frio, Rio de Janeiro State), is extended to off Rawson, Argentina. Within this species there are reported ontogenetic changes in the carapace ornamentation, in the chaetotaxy of the telson, and in the length ratio between the telson and the uropod peduncle. Copyright © 2013 Magnolia Press.
format	JOUR
author	Alberico, N.A. Roccatagliata, D.
author_facet	Alberico, N.A. Roccatagliata, D.
author_sort	Alberico, N.A.
title	On two South-West Atlantic Diastylis (Cumacea: Crustacea), D. obliquisulcata n. sp. and D. geocostae, with remarks on this speciose genus
title_short	On two South-West Atlantic Diastylis (Cumacea: Crustacea), D. obliquisulcata n. sp. and D. geocostae, with remarks on this speciose genus
title_full	On two South-West Atlantic Diastylis (Cumacea: Crustacea), D. obliquisulcata n. sp. and D. geocostae, with remarks on this speciose genus
title_fullStr	On two South-West Atlantic Diastylis (Cumacea: Crustacea), D. obliquisulcata n. sp. and D. geocostae, with remarks on this speciose genus
title_full_unstemmed	On two South-West Atlantic Diastylis (Cumacea: Crustacea), D. obliquisulcata n. sp. and D. geocostae, with remarks on this speciose genus
title_sort	on two south-west atlantic diastylis (cumacea: crustacea), d. obliquisulcata n. sp. and d. geocostae, with remarks on this speciose genus
url	http://hdl.handle.net/20.500.12110/paper_11755326_v3640_n1_p1_Alberico
work_keys_str_mv	AT albericona ontwosouthwestatlanticdiastyliscumaceacrustaceadobliquisulcatanspanddgeocostaewithremarksonthisspeciosegenus AT roccatagliatad ontwosouthwestatlanticdiastyliscumaceacrustaceadobliquisulcatanspanddgeocostaewithremarksonthisspeciosegenus
_version_	1807320207520169984

On two South-West Atlantic Diastylis (Cumacea: Crustacea), D. obliquisulcata n. sp. and D. geocostae, with remarks on this speciose genus

Ejemplares similares