Description of two new species of Malacoceros and Rhynchospio spionids (Polychaeta: Spionidae) from the Grand Caribbean region

Two new species of spionids are described from the Caribbean Sea, Malacoceros cariacoensis n. sp. from Venezuela and Rhynchospio harrisae n. sp. from Guana in the Virgin Islands, British Virgin Island. Malacoceros cariacoensis n. sp. can be differentiated by the shape of the prostomium, which has tw...

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Autores principales:	DELGADO-BLAS,V. HUGO, DÍAZ-DÍAZ,ÓSCAR
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2010
Materias:	Caribbean Malacoceros Rhynchospio Spionidae taxonomy
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000200006
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spelling	oai:scielo:S0716-078X20100002000062010-12-22Description of two new species of Malacoceros and Rhynchospio spionids (Polychaeta: Spionidae) from the Grand Caribbean regionDELGADO-BLAS,V. HUGODÍAZ-DÍAZ,ÓSCAR Caribbean Malacoceros Rhynchospio Spionidae taxonomy Two new species of spionids are described from the Caribbean Sea, Malacoceros cariacoensis n. sp. from Venezuela and Rhynchospio harrisae n. sp. from Guana in the Virgin Islands, British Virgin Island. Malacoceros cariacoensis n. sp. can be differentiated by the shape of the prostomium, which has two short frontal horns and the posterior portion laterally prolonged into a faintly demarcated, double-looped nuchal organ, extending to the base of setiger 2, a reduction in the size of setiger 1, the absence of body pigmentation, and the number of apical teeth on the hooded hooks. Rhynchospio harrisae n. sp. differs from other species of the genus in that the peristomium is moderately developed with low lateral wings, and the anterior notopodial setae are arranged in two rows with a superior tuft of capillaries. A key to Malacoceros species worldwide is provided.info:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.83 n.2 20102010-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000200006en10.4067/S0716-078X2010000200006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Caribbean Malacoceros Rhynchospio Spionidae taxonomy
spellingShingle	Caribbean Malacoceros Rhynchospio Spionidae taxonomy DELGADO-BLAS,V. HUGO DÍAZ-DÍAZ,ÓSCAR Description of two new species of Malacoceros and Rhynchospio spionids (Polychaeta: Spionidae) from the Grand Caribbean region
description	Two new species of spionids are described from the Caribbean Sea, Malacoceros cariacoensis n. sp. from Venezuela and Rhynchospio harrisae n. sp. from Guana in the Virgin Islands, British Virgin Island. Malacoceros cariacoensis n. sp. can be differentiated by the shape of the prostomium, which has two short frontal horns and the posterior portion laterally prolonged into a faintly demarcated, double-looped nuchal organ, extending to the base of setiger 2, a reduction in the size of setiger 1, the absence of body pigmentation, and the number of apical teeth on the hooded hooks. Rhynchospio harrisae n. sp. differs from other species of the genus in that the peristomium is moderately developed with low lateral wings, and the anterior notopodial setae are arranged in two rows with a superior tuft of capillaries. A key to Malacoceros species worldwide is provided.
author	DELGADO-BLAS,V. HUGO DÍAZ-DÍAZ,ÓSCAR
author_facet	DELGADO-BLAS,V. HUGO DÍAZ-DÍAZ,ÓSCAR
author_sort	DELGADO-BLAS,V. HUGO
title	Description of two new species of Malacoceros and Rhynchospio spionids (Polychaeta: Spionidae) from the Grand Caribbean region
title_short	Description of two new species of Malacoceros and Rhynchospio spionids (Polychaeta: Spionidae) from the Grand Caribbean region
title_full	Description of two new species of Malacoceros and Rhynchospio spionids (Polychaeta: Spionidae) from the Grand Caribbean region
title_fullStr	Description of two new species of Malacoceros and Rhynchospio spionids (Polychaeta: Spionidae) from the Grand Caribbean region
title_full_unstemmed	Description of two new species of Malacoceros and Rhynchospio spionids (Polychaeta: Spionidae) from the Grand Caribbean region
title_sort	description of two new species of malacoceros and rhynchospio spionids (polychaeta: spionidae) from the grand caribbean region
publisher	Sociedad de Biología de Chile
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000200006
work_keys_str_mv	AT delgadoblasvhugo descriptionoftwonewspeciesofmalacocerosandrhynchospiospionidspolychaetaspionidaefromthegrandcaribbeanregion AT diazdiazoscar descriptionoftwonewspeciesofmalacocerosandrhynchospiospionidspolychaetaspionidaefromthegrandcaribbeanregion
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Description of two new species of Malacoceros and Rhynchospio spionids (Polychaeta: Spionidae) from the Grand Caribbean region

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