Four new species of Cyclorhipidion and five new records of other xyleborine genera (Coleoptera, Curculionidae, Scolytinae, Xyleborini) from Taiwan

Four new species of Cyclorhipidion and five new records of other xyleborine genera (Coleoptera, Curculionidae, Scolytinae, Xyleborini) from Taiwan

We describe four new ambrosia beetle species of the tribe Xyleborini, Cyclorhipidion beaveri Lin & Smith sp. nov., Cyclorhipidion cognatoi Lin & Smith sp. nov., Cyclorhipidion hsuae Lin & Smith sp. nov., and Cyclorhipidion wui Lin & Smith sp. nov., which complete their lifecycle on the host plant Castanopsis cuspidata var. carlesii (Hemsl.) Yamazaki (Fagaceae). Five newly recorded species, Anisandrus ursulus (Eggers, 1923), Arixyleborus minor (Eggers, 1940), Coptodryas mus (Eggers, 1930), Cyclorhipidion japonicum (Nobuchi, 1981), and Xyleborinus octiesdentatus (Murayama, 1931) are reported in Taiwan for the first time. We provide brief diagnoses, photographic images and biological information for each species in Taiwan.