Two new species of Myriochele (Polychaeta: Oweniidae) from the Bransfield Strait, Antarctica

Among the benthic lithological samples collected during the Spanish Antarctic survey GEBRAP 1996–97 in the Bransfield Strait, two new oweniid (Annelida, Polychaeta, Oweniidae) species were collected: Myriochele riojai n. sp. and Myriochele robusta n. sp. Myriochele riojai is closely related to M. he...

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Bibliographic Details
Published in:Antarctic Science
Main Author: PARAPAR, JULIO
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2003
Subjects:
Antarctic
Bransfield Strait
Malmgren
Antarc*
Antarctic Science
Antarctica
Online Access:https://doi.org/10.1017/s0954102003001238
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102003001238
Description
Summary:Among the benthic lithological samples collected during the Spanish Antarctic survey GEBRAP 1996–97 in the Bransfield Strait, two new oweniid (Annelida, Polychaeta, Oweniidae) species were collected: Myriochele riojai n. sp. and Myriochele robusta n. sp. Myriochele riojai is closely related to M. heeri Malmgren, 1867 but differs in body size, number and distribution of the notosetae and in the position of elongated abdominal body segments. Myriochele robusta differs from all known species of the genus owing to its possession of a biramous setiger between two uniramous setigers in the anterior (thoracic) body region. A key to oweniid species recorded in Antarctic waters is provided.

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