Abstract
Two new species of the orphnine scarab beetle genus Madecorphnus Paulian, 1992 are described: M. heidiae Frolov Akhmetova, new species, and M. ranomafanensis Frolov Akhmetova, new species, from the Ranomafana National Park, Fianarantsoa Province, Eastern Madagascar. The new species can be easily distinguished by the endophallic armature consisting of more than 10 small and similar, conical tubercles in the former species and 3 long sclerites and 2 smaller indistinctly separated clusters of robust spinules in the later. Exact locality data are provided for the first time for two Triodontus Westwood, 1845, species: T. hildebrandtii (Fairmaire, 1883) was found in the northern Madagascar and is probably endemic to the Amber Mountain Range, T. fairmairei Frolov, Montreuil Akhmetova, 2016, was also found in the northern Madagascar: Antsiranana Province, Djangoa. The updated key to the Madecorphnus species is given.
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