As a result of taxonomic study of the Rivellia basilaris and its allied species in Korea, the following five species are recognized: R. basilaris(Wiedemann), R. flaviventris Hendel, R. nigroapicalis Byun et Suh, sp. nov., R. cestoventris Byun et Suh, sp. nov., and R. apicalis Hendel. None of the above species were previously reported in Korea. We provide descriptions and illustrations of these five species as well as a key to all 11 Korean Rivellia species. We also analysed interspecific relationships among Korean Rivellia species using cladistic methods. We propose to recognize R. basilaris species-group based on the presence of two lateral occipital setae as a synpomorphy. The monophyly of the previously recognized R. syngenesiae species-group is also suported by a single synapomorphy (outer surstylus extending beyond apex of cercus).