A new record of Exomala okinawaensis (Ohaus, 1925) (Coleoptera, Scarabaeidae, Rutelinae) from Zamamijima Island (Kerama Isls.) with an observation on its biology

Abstract

Exomala okinawaensis (Ohaus, 1925) has been recorded from Okinawajima Is., Iejima Is., Sesokojima Is., Hamahigajima Is. and Tokashikijima Is. Here I newly record this　species from Zamamijima Is. (Kerama Isls.). It is highly possible that this species would be an alien species to Zamami Island because it occurred suddenly in a seashore landfill in 2016. It is　observed that many jungle crow, Corvus macrorhynchos connectens Streseman, gathered and preyed on a large number of adult Exomala okinawaensis flying close to the ground surface.