Abstract
A new species of deep-water brachyuran crab, Euphrosynoplax dincao, from southeastern Brazil is described and illustrated. The genus Euphrosynoplax currently consists of two species, E. clausa Guinot, 1969, and E. campechiensis Vázquez-Bader & Gracia, 1991, both only known from the Gulf of Mexico. The new species can be easily separated from its northern counterparts by a suite of carapace and appendage characters. Euphrosynoplax campechiensis is recorded for the first time from the Caribbenan Sea (Guadeloupe and between Saint Kitts and Nevis).
Highlights
Euphrosynoplax Guinot, 1969, was established as a monotypic genus for E. clausa Guinot, 1969, from Dry Tortugas, Gulf coast of Florida
More than two decades elapsed before a second species of the genus was described, namely E. campechiensis Vázquez-Bader & Gracia, 1991, from the Gulf of Mexico
The genus currently consists of the above mentioned two species, both only known from the Gulf coasts (Vázquez-Bader & Gracia, 1991; Ng et al, 2008; Felder et al, 2009)
Summary
Euphrosynoplax Guinot, 1969, was established as a monotypic genus for E. clausa Guinot, 1969, from Dry Tortugas, Gulf coast of Florida. Comparative material: Euphrosynoplax clausa: USA: holotype male, cl 24 mm, cw 33 mm (USNM 65938), Gulf of Mexico, Florida Keys, Dry Tortugas, south of Loggerhead Key, Tortugas Expedition Carnegie Laboratory, 24°40′12.0′′N/81°34′48.0′′W, W.L. Schmitt coll.
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