Terpenoid secretions specific to termite soldiers were analyzed in Reticulitermes speratus speratus (Rss), R. speratus kyushuensis (Rsk), R. kanmonensis (Rk) and R. okinawanus (Ro), and 3 quantitatively major compounds were successfully identified. All these species possessed ?-selinene whose content was high in soldiers of Rss and Rsk. While ?-cadinene was detected only in Ro, (S)-(+)-(E,E)-geranyllinalool was first detected in the other species. Both soldiers of Rk and Rsk contained a large amount of this compound. Except for Ro, the soldier-specific terpenoids were identical among Rss, Rsk and Rk.