Yambaru National Park is covered with lush subtropical forests of laurel, beech and itajii trees (Castanopsis sieboldii). The rich vegetation nurtures a striking variety of rare and endemic species such as the Okinawa rail, Okinawa woodpecker, Ryukyu long-haired rat, Okinawa spiny rat and Yanbaru long-armed scarab beetle.
The Okinawa sekkoku (Dendrobium okinawense) is a rare species of orchid native to the Yanbaru area. It usually grows on the trunks of tall trees such as the itajii tree, and produces white flowers from winter to spring. It is National Endangered Species and is strictly protected.
Yanbaru Long-Armed Scarab Beetle
The Yanbaru long-armed scarab beetle (Cheirotonus jamba) is native to Okinawa Island. Its larvae live in hollows in broadleaf trees such as Castanopsis sieboldii and Quercus miyagi and feed on decaying plants. This species of beetle, which was discovered in 1983, is a National Natural Monument, a National Endangered Species and is strictly protected.
The Okinawa rail (Gallirallus okinawae) is a flightless bird endemic to northern Okinawa Island. It inhabits evergreen broadleaf forests and feeds on insects, snails, nuts and berries. The Okinawa rail is facing extinction and is a Natural National Monument, a National Endangered Species and is strictly protected.