Description of Tabanus tokaraensis n. sp. from Tokara Islands, Japan and a key to the Japanese species belonging to rufidens group of the genus Tabanus (Diptera, Tabanidae)

Abstract

Tabanus tokaraensis n. sp. is described based on the female materials from Kuchinoshima, Nakanoshima and Takarajima, Tokara Islands, Japan. This species is very closely related to Tabanus rufidens (Bigot, 1887), but can be easily distinguished from it by the shape of middle callus on frons which is fused broadly with basal callus. Key to the 10 Japanese species belonging to rufidens group of the genus Tabanus is presented.