Two new species of Waldo Nicol, 1966 from sub-Antarctic waters (Bivalvia: Galeommatoidea)

Two new sub-Antarctic Waldo species (Bivalvia) are described: Waldo digitatus and W. paucitentaculatus. Waldo digitatus has a large, elongate-oval shell, with a short, horizontal dorsal margin, the valves showing a wide ventral gape, well separated from the anterior gape, and faint radial sculpture,...

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Detalles Bibliográficos
Autores principales: Zelaya, D.G., Ituarte, C.
Formato: JOUR
Materias:
Bivalvia
Galeommatoidea
Waldo
bivalve
echinoderm
epibiont
new species
population distribution
taxonomy
Antarctica
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_17451000_v9_n8_p776_Zelaya
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_17451000_v9_n8_p776_Zelaya
record_format dspace
spelling todo:paper_17451000_v9_n8_p776_Zelaya2023-10-03T16:31:56Z Two new species of Waldo Nicol, 1966 from sub-Antarctic waters (Bivalvia: Galeommatoidea) Zelaya, D.G. Ituarte, C. Bivalvia Galeommatoidea Waldo bivalve echinoderm epibiont new species population distribution taxonomy Antarctica Two new sub-Antarctic Waldo species (Bivalvia) are described: Waldo digitatus and W. paucitentaculatus. Waldo digitatus has a large, elongate-oval shell, with a short, horizontal dorsal margin, the valves showing a wide ventral gape, well separated from the anterior gape, and faint radial sculpture, fading toward shell margin. In addition, in this species the inhalant-pedal aperture is flanked by 5-15 pairs of tentacles. Waldo paucitentaculatus has a small, triangular-oval shell, with anterior and posterior half of dorsal margin long, sloping gently at similar angles, the anterior and ventral shell gapes coalesce to form a single, narrow and elongated gape, and radial sculpture well-marked and visible from beaks to ventral margin. Another distinctive character is the presence of only 1 or 2 pairs of tentacles bordering the siphonal-pedal aperture. Both species were found living as epibionts on the heart sea urchin Abatus cavernosus: W. digitatus is restricted to the perioral area and W. paucitentaculatus is more widely distributed, mainly on the oral surface. © 2013 Copyright Taylor and Francis Group, LLC. 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_17451000_v9_n8_p776_Zelaya
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Bivalvia
Galeommatoidea
Waldo
bivalve
echinoderm
epibiont
new species
population distribution
taxonomy
Antarctica
spellingShingle Bivalvia
Galeommatoidea
Waldo
bivalve
echinoderm
epibiont
new species
population distribution
taxonomy
Antarctica
Zelaya, D.G.
Ituarte, C.
Two new species of Waldo Nicol, 1966 from sub-Antarctic waters (Bivalvia: Galeommatoidea)
topic_facet Bivalvia
Galeommatoidea
Waldo
bivalve
echinoderm
epibiont
new species
population distribution
taxonomy
Antarctica
description Two new sub-Antarctic Waldo species (Bivalvia) are described: Waldo digitatus and W. paucitentaculatus. Waldo digitatus has a large, elongate-oval shell, with a short, horizontal dorsal margin, the valves showing a wide ventral gape, well separated from the anterior gape, and faint radial sculpture, fading toward shell margin. In addition, in this species the inhalant-pedal aperture is flanked by 5-15 pairs of tentacles. Waldo paucitentaculatus has a small, triangular-oval shell, with anterior and posterior half of dorsal margin long, sloping gently at similar angles, the anterior and ventral shell gapes coalesce to form a single, narrow and elongated gape, and radial sculpture well-marked and visible from beaks to ventral margin. Another distinctive character is the presence of only 1 or 2 pairs of tentacles bordering the siphonal-pedal aperture. Both species were found living as epibionts on the heart sea urchin Abatus cavernosus: W. digitatus is restricted to the perioral area and W. paucitentaculatus is more widely distributed, mainly on the oral surface. © 2013 Copyright Taylor and Francis Group, LLC.
format JOUR
author Zelaya, D.G.
Ituarte, C.
author_facet Zelaya, D.G.
Ituarte, C.
author_sort Zelaya, D.G.
title Two new species of Waldo Nicol, 1966 from sub-Antarctic waters (Bivalvia: Galeommatoidea)
title_short Two new species of Waldo Nicol, 1966 from sub-Antarctic waters (Bivalvia: Galeommatoidea)
title_full Two new species of Waldo Nicol, 1966 from sub-Antarctic waters (Bivalvia: Galeommatoidea)
title_fullStr Two new species of Waldo Nicol, 1966 from sub-Antarctic waters (Bivalvia: Galeommatoidea)
title_full_unstemmed Two new species of Waldo Nicol, 1966 from sub-Antarctic waters (Bivalvia: Galeommatoidea)
title_sort two new species of waldo nicol, 1966 from sub-antarctic waters (bivalvia: galeommatoidea)
url http://hdl.handle.net/20.500.12110/paper_17451000_v9_n8_p776_Zelaya
work_keys_str_mv AT zelayadg twonewspeciesofwaldonicol1966fromsubantarcticwatersbivalviagaleommatoidea
AT ituartec twonewspeciesofwaldonicol1966fromsubantarcticwatersbivalviagaleommatoidea
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