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New Species and New Records of Hydrothermal Vent Shrimps from New Zealand (Caridea: Alvinocarididae, Hippolytidae)

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Alvinocaris alexander sp. nov. (Alvinocarididae) and Lebbeus wera sp. nov. (Hippolytidae) are described from hydrothermal vents on the southern Kermadec Ridge, northern New Zealand. Alvinocaris alexander most closely resembles A. williamsi Shank & Martin, 2003 from the Mid-Atlantic Ridge, differing in rostral, antennular, and abdominal features. Alvinocaris alexander is apparently sympatric with A. niwa Webber, 2004, and comprises part of the type series of the latter. Lebbeus wera is the first species of the genus to be recorded from New Zealand waters and is most similar to other deep-water Lebbeus species including Lebbeus washingtonianus (Rathbun, 1902) and L. polyacanthus Komai, Hayashi & Kohtsuka, 2004, but is distinctive in its five dorsal postrostral teeth. The first records of the alvinocaridid, Nautilocaris saintlaurentae Komai & Segonzac, 2004, from Brothers Seamount, New Zealand, are reported, being previously known only from the North Fiji and Lau basins. Three genera and five species of caridean shrimp are now known from New Zealand hydrothermal vents. Alvinocaris alexander sp. nov. (Alvinocarididae) und Lebbeus wera sp. nov. (Hippolytidae) werden im Folgenden von hydrothermalen Quellen des südlichen Kermadec Rückens, Nord-Neuseeland, beschrieben. Alvinocaris alexander ähnelt A. williamsi Shank & Martin, 2003 vom Mittelatlantischen Rücken, unterscheidet sich aber in Merkmalen des Rostrums, der Antennen und des Abdomens. Alvinocaris alexander ist scheinbar sympatrisch mit A. niwa Webber, 2004, und stellt einen Teil dessen Typenserie dar. Lebbeus wera ist die erste Art dieser Gattung aus neuseeländischen Gewässern und ähnelt anderen Tiefseearten der Gattung Lebbeus wie Lebbeus washingtonianus (Rathbun, 1902) und L. polyacanthus Komai, Hayashi & Kohtsuka, 2004, unterscheidet sich von diesen allerdings durch seine fünf dorsalen postrostralen Zähne. Erstmals wird hier die alvinocaridide Nautilocaris saintlaurentae Komai & Segonzac, 2004, von dem Brothers Seamount, Neuseeland, gemeldet. Bisher war diese Art nur vom Nord-Fidschi-Becken und dem Lau Becken bekannt. Damit sind drei Gattungen und fünf Arten carideaner Garnele von neuseeländischen Hydrothermalquellen bekannt.

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/content/journals/10.1163/156854009x427333
2009-06-01
2015-06-03

Affiliations: 1: Marine Biodiversity & Biosecurity, National Institute of Water and Atmospheric Research (NIWA), Private Bag 14901, Kilbirnie, Wellington, New Zealand;, Email: s.ahyong@niwa.co.nz

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