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Two new species of Metachromadora (Nematoda: Desmodoridae) from Guanabara Bay, Rio de Janeiro, Brazil, and a revised dichotomous key to the genus

Published online by Cambridge University Press:  05 September 2013

Tatiana F. Maria ,
Nic Smol  and
André M. Esteves
Tatiana F. Maria*
Affiliation:
Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Av. Pasteur, 458 – Depto de Ecologia e Recursos Marinhos, Rio de Janeiro, 22290-240Brazil
Nic Smol
Affiliation:
Department of Biology, Nematology Section, Ghent University, Ledeganckstraat 35, B-9000 Ghent, Belgium
André M. Esteves
Affiliation:
Universidade Federal de Pernambuco, Av. Prof. Moraes Rêgo, S/N, Depto. Zoologia, Cidade Universitária, Recife – Pernambuco, 50670-901Brazil
*
Correspondence should be addressed to: T.F. Maria, Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Av. Pasteur, 458 – Depto de Ecologia e Recursos Marinhos, Rio de Janeiro, 22290-240Brazil email: tatiana_fabricio@yahoo.com.br
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Abstract

Two new species of Metachromadora are described from Bananal and Bica beaches in Guanabara Bay on the coast of Rio de Janeiro, Brazil. Both new species belong to the subgenus Bradylaimus, which is characterized by the absence of lateral alae. Metachromadora prepapillata sp. nov. is characterized by the presence of 8–9 precloacal papilliform supplements, while Metachromadora verae sp. nov. is characterized by the sexual dimorphism of the amphidial fovea, presence of 8–9 precloacal tubuliform supplements, and three postcloacal papillae. An updated dichotomous key to species of Metachromadora is proposed. Metachromadora asupplementa is reinstated as a valid species.

Keywords

marine nematodesDesmodoridadescriptionidentification key
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 94 , Issue 1 , February 2014 , pp. 105 - 114
Copyright
Copyright © Marine Biological Association of the United Kingdom 2013 

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