A redescription of Malvinasia Cooper & Preston, 1910 (Bivalvia: Galeommatoidea), with the description of a new species

After its original description, the bivalve genus Malvinasia Cooper & Preston, 1910 was regarded as a junior synonym of Mysella or Rochefortia. However, due to the recent changes proposed in the classification and the concept of 'mysellids', the current status and concept of this genus...

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Autores principales: Ituarte, C., Zelaya, D.G.
Formato: JOUR
Materias:
anatomy
bivalve
geographical distribution
morphology
new species
ontogeny
taxonomy
Atlantic Coast [South America]
England
Lancashire
Patagonia
Preston
United Kingdom
Bivalvia
Galeommatoidea
Mysella
Rochefortia (bivalve)
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02601230_v81_n4_p455_Ituarte
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02601230_v81_n4_p455_Ituarte
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spelling todo:paper_02601230_v81_n4_p455_Ituarte2023-10-03T15:11:48Z A redescription of Malvinasia Cooper & Preston, 1910 (Bivalvia: Galeommatoidea), with the description of a new species Ituarte, C. Zelaya, D.G. anatomy bivalve geographical distribution morphology new species ontogeny taxonomy Atlantic Coast [South America] England Lancashire Patagonia Preston United Kingdom Bivalvia Galeommatoidea Mysella Rochefortia (bivalve) After its original description, the bivalve genus Malvinasia Cooper & Preston, 1910 was regarded as a junior synonym of Mysella or Rochefortia. However, due to the recent changes proposed in the classification and the concept of 'mysellids', the current status and concept of this genus remains unclear. In the present study, the relationships of the genus Malvinasia with Mysella, Rochefortia, Rochefortula and Altenaeum are reanalysed, based on the study of Malvinasia arthuri Cooper & Preston, 1910, the type species of the genus. This species has a resilifer markedly introverted below the umbones and a right valve with a single, peg-like tooth, located anterior to the ligament. This peculiar hinge morphology is consistent throughout ontogeny in the genus, being present in at least four other South American morphospecies. Based on this evidence Malvinasia is considered a full genus, which is redescribed. In addition, Malvinasia piccola, a new species from the Atlantic coast of southern Patagonia is described and Mysella (Rochefortia) molinae Ramorino, 1968 is reallocated to Malvinasia. Information on the gross anatomy of this genus is provided by first time. © The Author 2015. Published by Oxford University Press on behalf of The Malacological Society of London, all rights reserved. Fil:Zelaya, D.G. 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_02601230_v81_n4_p455_Ituarte
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic anatomy
bivalve
geographical distribution
morphology
new species
ontogeny
taxonomy
Atlantic Coast [South America]
England
Lancashire
Patagonia
Preston
United Kingdom
Bivalvia
Galeommatoidea
Mysella
Rochefortia (bivalve)
spellingShingle anatomy
bivalve
geographical distribution
morphology
new species
ontogeny
taxonomy
Atlantic Coast [South America]
England
Lancashire
Patagonia
Preston
United Kingdom
Bivalvia
Galeommatoidea
Mysella
Rochefortia (bivalve)
Ituarte, C.
Zelaya, D.G.
A redescription of Malvinasia Cooper & Preston, 1910 (Bivalvia: Galeommatoidea), with the description of a new species
topic_facet anatomy
bivalve
geographical distribution
morphology
new species
ontogeny
taxonomy
Atlantic Coast [South America]
England
Lancashire
Patagonia
Preston
United Kingdom
Bivalvia
Galeommatoidea
Mysella
Rochefortia (bivalve)
description After its original description, the bivalve genus Malvinasia Cooper & Preston, 1910 was regarded as a junior synonym of Mysella or Rochefortia. However, due to the recent changes proposed in the classification and the concept of 'mysellids', the current status and concept of this genus remains unclear. In the present study, the relationships of the genus Malvinasia with Mysella, Rochefortia, Rochefortula and Altenaeum are reanalysed, based on the study of Malvinasia arthuri Cooper & Preston, 1910, the type species of the genus. This species has a resilifer markedly introverted below the umbones and a right valve with a single, peg-like tooth, located anterior to the ligament. This peculiar hinge morphology is consistent throughout ontogeny in the genus, being present in at least four other South American morphospecies. Based on this evidence Malvinasia is considered a full genus, which is redescribed. In addition, Malvinasia piccola, a new species from the Atlantic coast of southern Patagonia is described and Mysella (Rochefortia) molinae Ramorino, 1968 is reallocated to Malvinasia. Information on the gross anatomy of this genus is provided by first time. © The Author 2015. Published by Oxford University Press on behalf of The Malacological Society of London, all rights reserved.
format JOUR
author Ituarte, C.
Zelaya, D.G.
author_facet Ituarte, C.
Zelaya, D.G.
author_sort Ituarte, C.
title A redescription of Malvinasia Cooper & Preston, 1910 (Bivalvia: Galeommatoidea), with the description of a new species
title_short A redescription of Malvinasia Cooper & Preston, 1910 (Bivalvia: Galeommatoidea), with the description of a new species
title_full A redescription of Malvinasia Cooper & Preston, 1910 (Bivalvia: Galeommatoidea), with the description of a new species
title_fullStr A redescription of Malvinasia Cooper & Preston, 1910 (Bivalvia: Galeommatoidea), with the description of a new species
title_full_unstemmed A redescription of Malvinasia Cooper & Preston, 1910 (Bivalvia: Galeommatoidea), with the description of a new species
title_sort redescription of malvinasia cooper & preston, 1910 (bivalvia: galeommatoidea), with the description of a new species
url http://hdl.handle.net/20.500.12110/paper_02601230_v81_n4_p455_Ituarte
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