Abstract
Lissosabinea tridentata (Pequegnat, 1970) known hitherto from the Gulf of Mexico off Florida (24N) and only western Atlantic representative of the genus, is reported here for the first time from much further south, Brazil off the coast of Esprito Santo, Vitria-Trindade Seamount Chain, Montague Bank (20S), between 310 and 391 m. A second western Atlantic species, Lissosabinea christofferseni sp. nov., is described here as new from material collected in the Abrolhos Bank, at depth between 340360 m. One exuviae and one damaged specimen, reported in 1988 from off the coast of Chu, Brazil (34S) (at that time mistakenly referred to as Uruguay) and attributed to Lissosabinea cf. tridentata are herein referred to the new species. It has been clarified that Lissosabinea christofferseni sp. nov. and L. tridentata have a transverse row of teeth adjacent to the posterior margin of the sixth pleonal sternite; in crangonids, such a feature is so far known only in Placopsicrangron formosa Komai Chan, 2009.
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