A new species of Aegus Macleay, 1819 (Coleoptera: Lucanidae: Lucaninae: Aegini) from Thailand with checklist of the genus species from the country Author Pathomwattananurak, Wuttipon 1051 / 38 Wiang, Mueang Dist., Chiang Rai Province, 57000, Thailand Author Jiaranaisakul, Kawin Rabbit in the Moon Foundation, 399, Village No. 3, Suan Phueng, Ratchaburi, 70180, Thailand text Zootaxa 2024 2024-05-21 5453 3 341 358 http://dx.doi.org/10.11646/zootaxa.5360.3.8 journal article 10.11646/zootaxa.5453.3.2 1175-5326 11234118 285FAECF-D307-48F5-9FA1-DE6320EA0F7C Aegus laticollis Arrow, 1943 ( Fig. 44 ) Aegus dilaticollis Ritsema, 1900: 189 . Type locality: Pleyhari and Mentawei Is. Van Roon 1910: 41 ; Arrow 1943: 141 (as homonym of Aegus laticollis Parry, 1864 ); Mizunuma & Nagai 1994: 294 ; Krajcik 2003: 14 ; Fujita 2010: 339 . Aegus laticollis Arrow, 1943: 141 (replacement name for Aegus dilaticollis Ritsema, 1900 ); Benesh 1960: 103 ; Bomans 1967: 315 ; Bomans & Benoit 2007: 62 . Aegus dilaticollis endroedyi Nagai in Mizunuma & Nagai, 1994: 39 , pl. 131, fig. 609 (16–17). Type locality: Cameron Highlands. Bomans & Benoit 2007: 62 (as synonym); Fujita 2010: 339 . Material examined ( 1♀ ). Thailand : 1♀ ( WPC ), Yala Prov. , Betong Dist. , 23.IV.2022 , Suradet Sae-Liang leg. Distribution. Indonesia , Malaysia ( Mizunuma & Nagai 1994 ; Krajcik 2003 ; Fujita 2010 ) and Thailand ( Yala Province ) ( new record ).