Two new species of the water scavenger beetle genus Berosus Leach are described from southern Brazil: B. spiniger sp. n. is placed in the auriceps-complex and B. degallieri sp. n. is placed in the sticticus-complex. Tables with diagnostic characters are provided for all described species in both of these complexes.
The species of the water scavenger beetle genus Berosus Leach occurring in Venezuela are reviewed. Thirtysix species are recorded, including fifteen new species, fourteen of which are described here as new: B.
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