Unpublished species of aquatic beetles of the genus Anacaena in the Upper Apure, Venezuela (Hydrophilidae: Chaetarthriinae: Anacaenini)

Seven new species of the genus Anacaena Thomson, 1859 are described from region of Alto Apure, Venezuela: A. crenituloides sp. n., A. hospesa sp. n., A. llanera sp. n., A. mantecala sp. n., A. pallida sp. n., A. paulincarmenae sp. n. and A. samana sp. n., closely related morphologically, representing a new group of species within the Neotropical genus Anacaena. All of them are associated with the same lentic environment, inhabiting the muddy sediments of shallow water bodies. Detailed illustrations of the type specimens are presented, including habitus and genitalia, as well as a satellite image that locates the collection points in the trunk 19 of the BarinasApure highway.