One male bat was captured by mist-net on a telegraph pole in the Li Autonomous County, Hainan Island in November 2007. It was identified as Nyctalus plancyi
(Chiroptera: Vespertilionidae) based on the morphological data and mitochondrial ND1 gene sequence, and presented as the first record from Hainan Island. N. plancyi
, which roosted daily on a telegraph pole in Hainan Island, emitted a pulse with an energy frequency between 33 - 34 kHz, and pulse duration between 1.3-1.9 ms, maximum identity based on ND1 sequence analysis between Hainan Island and Sichuan was 99%.