There are currently six recognized species in this genus:Tosarhombus brevis Amaoka, Mihara & Rivaton, 1997Tosarhombus longimanus Amaoka, Mihara & Rivaton, 1997Tosarhombus neocaledonicus Amaoka & Rivaton, 1991Tosarhombus nielseni Amaoka & Rivaton, 1991Tosarhombus octoculatus Amaoka, 1969