Description of three tabanid species belonging to the genus Tabanus from Japan (Diptera, Tabanidae)

Three new species of horse flies, Tabanus taiwanus, T. matsuzawai and T. fulvilineus are described based on the materials from Japan. These species have so far been considered as T. amaenus Walker, T. exoticus Ricardo and T. fulvimedius Walker, respectively. Diagnostic characters of them were presented. The males of respective species are newly described and figured.