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Type: Article
Published: 2016-10-06
Page range: 475–482
Abstract views: 95
PDF downloaded: 58

A new species of symbiotic palaemonid shrimp of the genus Pseudocoutierea Holthuis, 1951 (Decapoda: Caridea: Palaemonidae) from the eastern Gulf of Mexico, with an updated key for the identification of species of the genus

University of Florida, Florida Museum of Natural History, Ichthyology Department, Dickinson Hall, Newell Dr. and Museum Rd., PO Box 117800, Gainesville, FL 32611, U. S. A. Florida Fish and Wildlife Conservation Commission, Fish and Wildlife Research Institute, 100 8th Ave. SE, St. Petersburg, FL 33701, U. S. A.
Department of Invertebrate Zoology, Smithsonian Institution, National Museum of Natural History, 4210 Silver Hill Road, Suitland, MD 20746 U. S. A.
Crustacea Gulf of Mexico Pseudocoutierea stephanieae new species Decapoda Caridea Palaemonidae

Abstract

A new species of symbiotic palaemonid shrimp of the genus Pseudocoutierea Holthuis, 1951, is described based on a specimen collected in the eastern Gulf of Mexico, off the southwest coast of Florida. Pseudocoutierea stephanieae sp. nov., is the seventh known in this genus, and morphologically most similar to P. antillensis Chace, 1972, and P. conchae Criales, 1981, from the western Atlantic, and P. elegans Holthuis, 1952, from the eastern Pacific, all sharing an expanded rostral base or eaves that terminate supra-distally in an acute tooth. This new species can be separated by: the presence of an epigastric knob or tubercle on the anterior mid-dorsal third of the carapace, which is absent in all other congeneric species; the shape of the pterygostomial sinus, which is shallow in this new species, whereas it is deep and well defined in all other congeneric species. An updated dichotomous key to species of Pseudocoutierea is presented.

 

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