A cicadid hind wing fossil (Hemiptera, Cicadidae) from the Lower Miocene Masaragawa Formation, Seki, Sado Island, Niigata Prefecture

抄録

A fragmentary hind wing of a fossil Cicadidae was obtained from Lower Miocene lacustrine deposits of the Masaragawa Formation in Seki, Sado City, Niigata Prefecture. Based on unique characteristics, such as the quite short apical cell 1 and partial preservation of small wing, the specimen is identified as Cicadidae gen. et sp. indet. The fossil does not having close relatives in modern Japan or East Asia. This occurrence is the oldest fossil record of a cicada in Japan.