@article{oai:oist.repo.nii.ac.jp:00002145,
 author = {Dinets, Vladimir and Friedman, Nicholas R. and Yoshimura, Masashi and Ogasawara, Masako and Economo, Evan P.},
 issue = {4},
 journal = {Mammal Study},
 month = {Oct},
 note = {Pipistrelles of the genus Hypsugo are among the rarest bats in Japan, known from a handful of records. In June 2018, a sequence of echolocation calls apparently by a bat of this genus was recorded by an automatic ultrasound recorder on the island of Okinawa. The calls closely resemble H. pulveratus, a Chinese species never before recorded in Japan, and H. alaschanicus, a very rare species in Japan. They also resemble calls of Hypsugo sp. bats from a small population recently discovered on nearby Amami-Oshima Island. The extreme rarity in our recordings, combined with lack of detection in Okinawa by other surveys, suggests that the individual was a vagrant. However, given the cryptic nature of the species on Amami, it remains possible that there is a small and likely endangered resident population, underlining the need for further bat surveys on Okinawa and other Nansei Islands.},
 pages = {353--356},
 title = {Acoustic Detection of an Unknown Bat Species in Okinawa},
 volume = {45},
 year = {2020}
}