A new species of Phtntrtdium (Diptera: Nycteribiidae) from Iriomote Island, the Ryukyu Islands, Japan, with a key to nycteribiid bat flies of Japan

摘要

A new species, Phthiridium sawadai (Diptera: Nycteribiidae), is described on the basis of specimens collected from the Yaeyama least horseshoe bat, Rhinolophus perditus, of Iriomote Island, Okinawa, southern Japan. This species is closely related to Rornatum and P. szechuanum recorded from the Asian Continent in having a serrated process on the phallobase of male genitalia, but can easily be separated from these species in both male and female morphology. A key to the three Phthiridium species and akey to all eleven species of Nycteribiidae known from Japan are also provided.