Journal of the Marine Biological Association of the UK



Research Article

A new species of Tortanus (Atortus) (Copepoda: Calanoida: Tortanidae) from Rodrigues Island, Mauritius


Susumu  Ohtsuka a1c1 and David V.P.  Conway a2
a1 Fisheries Laboratory, Hiroshima University, 5-8-1 Minato-machi, Takehara, Hiroshima 725-0024, Japan
a2 Marine Biological Association of the United Kingdom, The Laboratory, Citadel Hill, Plymouth, Devon, PL1 2PB, UK

Abstract

A new species of the copepod genus Tortanus (Atortus) (Copepoda: Calanoida), T. (A.) insularis, is described from the coastal region of Rodrigues Island, Mauritius, an isolated island in the south-western Indian Ocean. This new species can be assigned to an Indian faunal element, the recticauda species group, in the Indo-West Pacific recticauda species complex. It exhibits the closest relationship to T. (A.) recticauda recorded from the southern Red Sea and Arabian Gulf, rather than the closer distributed T. (A.) capensis, recorded from off South Africa.

(Received September 16 2002)
(Accepted February 5 2003)


Correspondence:
c1 e-mail: ohtsuka@hiroshima-u.ac.jp