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 Komai, T. and M. Segonzac (2005) A revision of the genus Alvinocaris Williams and Chace (Crustacea: Decapoda: Caridea: Alvinocarididae), with descriptions of a new genus and a new species of Alvinocaris. Journal of Natural History 39(15): 1111–1175. PDF is 2.1MB

 

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Reference ID 27288
Reference type journalarticle
Authors Komai, T.
Segonzac, M.
Publication Year (for display) 2005
Publication Year (for sorting) 2005
Title A revision of the genus _Alvinocaris_ Williams and Chace (Crustacea: Decapoda: Caridea: Alvinocarididae), with descriptions of a new genus and a new species of _Alvinocaris_
Secondary Title Journal of Natural History
Secondary Authors  
Tertiary Title  
Tertiary Authors  
Volume 39
Issue 15
Pages 1111–1175
Place published  
Published  
Date  
URL
Abstract
The caridean shrimp genus Alvinocaris Williams and Chace, 1982 (Bresilioidea: Alvinocarididae) is revised based upon type material and newly obtained samples from various reducing environments of the deep-sea floor of the world. All species are known from chemosynthetic communities associated with hydrothermal vents, brine or cold seeps. Eight named species are recognized in Alvinocaris, of which one is new, A. dissimilis sp. nov. from the hydrothermally influenced area of Minami-Ensei Knoll, Mid-Okinawa Trough. Alvinocaris dissimilis sp. nov. was confused with A. brevitelsonis in the original description of the latter species by Kikuchi and Hashimoto (2000). Seven previously described species (A. lusca Williams and Chace, 1982, A. markensis Williams, 1988, A. muricola Williams, 1988, A. stactophila Williams, 1988, A. longirostris Kikuchi and Ohta, 1995, A. brevitelsonis Kikuchi and Hashimoto, 2000, and A. williamsi Shank and Martin, 2003) are re-described, and characters distinguishing these species are re-assessed. Two species are confounded in the type series of A. stactophila Williams, 1988. The taxonomic status of the allotype of A. stactophila was not satisfactorily determined, as it appears to be an immature specimen. The geographic range of A. muricola, previously known only from cold seeps on the West Florida Escarpment, Gulf of Mexico, is greatly extended to the Barbados accretionary prism in the tropical western Atlantic and to the newly discovered seeps on the west equatorial African margin (Sibuet et al. 2002). In addition to these eight named species, five indeterminate or unnamed species of Alvinocaris have been reported, and most of them are under study by other authors. A new monotypic genus, Shinkaicaris, is established for Alvinocaris leurokolos Kikuchi and Hashimoto, 2000. The new genus is rather closer to Chorocaris Martin and Hessler, 1990, Opaepele Williams and Dobbs, 1995, and Rimicaris Williams and Rona, 1986 than to Alvinocaris in the structure of the eyes and the armament of the telson and pereopods. A key to aid in the identification of the eight species of Alvinocaris is given, although it is applicable only to adult specimens. The biogeography of Alvinocaris species is discussed.
Keywords Alvinocarididae Alvinocaris Caridea Crustacea Decapoda key to species new genus new species Shinkaicaris MID-ATLANTIC RIDGE HYDROTHERMAL VENT COMMUNITIES FAMILY ALVINOCARIDIDAE RIMICARIS-EXOCULATA SHRIMPS CRUSTACEA INDIAN-OCEAN BRESILIIDAE BIOGEOGRAPHY MORPHOLOGY SEEPS
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