A new species of the genus Pseudohomonyx Arrow, 1908 (Coleoptera: Scarabaeidae: Dynastinae) from Malaysia and Thailand, with first description of P. apoensis Miyake & Yamaya, 1997 male and a catalogue of the genus Author Yang, Qiao-Zhi Author Geshev, Georgi 3 B, Pingguoshequ, Baiziwan Road, Chaoyang Dist., Beijing, 100022, P. R. China Author Pathomwattananurak, Wuttipon 1051 / 38 Wiang, Mueang Dist., Chiang Rai Province, Thailand 57000 text Zootaxa 2023 2023-10-31 5361 1 114 124 https://www.mapress.com/zt/article/download/zootaxa.5361.1.6/52164 journal article 10.11646/zootaxa.5361.1.6 1175-5326 10150590 33F819C3-F34D-431B-B262-C8FDBFD5FF4F Pseudohomonyx crassus Arrow, 1911 Pseudohomonyx crassus Arrow, 1911: 159 ; Arrow 1937: 32 ; Endrődi 1969: 441 , figs. 36–37 (parameres); Endrődi 1985: 316 , figs. 1220–1221 (parameres); Miyake & Yamaya 1997: 10 , figs. 8a–b (parameres); Krajčík 2005: 55 ; Krajčík 2012: 228 ; Jákl & Zídek 2017: 22 , figs. 6 (habitus), 7 (head and pronotum), 8–9 (parameres). Type locality: “ Kina Balu, N. -Borneo” Type depository: Lectotype : ♁ ( BMNH ). Distribution: Malaysia : Borneo; Indonesia : Kalimantan . Remarks. As mentioned by Endrődi (1969) , a “ P. craceus ♁- Type ” was found in Prell’s collection (now in MFNB) which is presented in the section of Pseudohomonyx crassus Arrow, 1911 . However, it has been identified by Endrődi as P. borneensis Arrow, 1908 , with dubious locality of “ Java ”; and without any publication from Prell regarding this specimen, it was excluded from any type series ( Endrődi 1969 ).