New species of Plateros Bourgeois, 1879 (Coleoptera, Lycidae) from Hainan Island, China

Five new species of Plateros Bourgeois, 1879 are discovered from Hainan Island, China, and described as P. hainanensis sp. nov., P. sinuatus sp. nov., P. elongatus sp. nov., P. dentaticornis sp. nov., and P. spinulosus sp. nov. Three previously known species, including P. belokobylskyi Kazantsev, 2011, P. binhanus (Pic, 1925), and P. bachmaensis Kazantsev & Pham, 2026, are recorded to China for the first time. Females of P. belokobylskyi and P. incurvusimimus Fang, Yang, Yang & Liu, 2024 are identified for the first time.

These species are illustrated with their habitus and male genitalia. An identification key to the Plateros species found on Hainan Island, China is provided.