The genus Deutella is reviewed and a key to the species is given. A new species of Deutella is described from Isla Margarita, Venezuela. Full description and illustrations are given for the adult male and female. Diagnostic features of this species are: body dorsally smooth, flagellum of antenna 1 with 14 articles in males and 10 in females, setal formula of the mandibular palp 1-9-1, molar flake present. propodus palm of gnathopod 1 with a pair of grasping spines, male abdominal appendages two-articulate. Deutella venenosa Mayer, 1890 is redescribed based on the material newly collected from Coquimbo, Chile. This species is recorded for the first time since the original description by Mayer (1890). The species Luconacia vemae McCain and Gray, 1971 is transferred to the genus Deutella.
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