Abstract
AbstractA new species of the alvinocaridid shrimp genus RimicarisWilliams & Rona, 1986, R. falkoraen. sp., is described and illustrated based on material from deep-sea hydrothermal vents (3,630–3,912 m deep) on the Mariana Back Arc Spreading Centre, northwestern Pacific, representing the tenth described species of the genus. The new species is morphologically most similar to R. paulexa (Martin & Shank, 2005), but the presence of numerous short setae scattered on the carapace surface, the relatively long antennular stylocerite usually reaching the distal margin of article 2 of the antennular peduncle and the spiniform posteromesial projection of the uropodal protopod distinguish the new species from all congeners. Genetic analysis using the barcoding region of the mitochondrial COI gene supports the recognition of the species as new.
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