The first Asian species of Polycaon Castelnau, and a new montane species of Melalgus Dejean from China (Coleoptera: Bostrichidae: Polycaoninae) Author Liu, Lan-Yu Department of Science Communication, National Pingtung University- Pingshi Campus, No. 1, Linsen Rd, Pingtung City, Pingtung County 90049, Taiwan Author Beaver, Roger A. 161 / 2 Mu 5, Soi Wat Pranon, T. Donkaew, A. Maerim, Chiangmai 50180, Thailand text Zootaxa 2023 2023-07-10 5315 3 271 281 http://dx.doi.org/10.11646/zootaxa.5315.3.5 journal article 58478 10.11646/zootaxa.5315.3.5 27c8db3e-eaa9-4a88-a65c-0a4d99a18c0a 1175-5326 8130647 3B99C8B1-72B1-4D90-86EE-11EC31FD95AA Genus Polycaon Castelnau, 1836: 30 Type species: Polycaon chiliensis Castelnau, 1836: 30 (= Psoa chilensis Erichson, 1834: 266 ). Monotypy.