A description of the second species of the genus Platybolium Blair, 1938 (Coleoptera: Tenebrionidae) collected from a nest of Pheidole singaporensis Özdikmen, 2010 (Hymenoptera: Formicidae) in Thailand Author Maruyama, Munetoshi The Kyushu University Museum, Hakozaki 6 - 10 - 1, Fukuoka 812 - 8581, Japan. Author Sasitorn, Hasin 0000-0003-0704-2724 Innovation of Environmental Management, Valaya Alongkorn Rajabhat University under the Royal Patronage, Klong Luang, Pathumthani 13180, Thailand. hansinasi @ gmail. com; https: // orcid. org / 0000 - 0003 - 0704 - 2724 hansinasi@gmail.com Author Ando, Kiyoshi Entomological Laboratory, Faculty of Agriculture, Ehime University, Tarumi 3 - 5 - 7, Matsuyama, 790 - 8566, Japan. cnodalonini @ kbe. biglobe. ne. jp; https: / orcid. org / 0000 - 0003 - 1794 - 2718 cnodalonini@kbe.biglobe.ne.jp text Zootaxa 2023 2023-03-20 5256 3 289 294 http://dx.doi.org/10.11646/zootaxa.5256.3.5 journal article 10.11646/zootaxa.5256.3.5 cae91021-0f85-428d-9cae-d154cea531cc 1175-5326 7751638 C07C4514-D970-4629-91DE-74AB190BA3F3 Key to the species of the genus Platybolium 1. Body dorsally rugose-punctate, matte; canthus as wide as lateral length of eye; frons densely rugose-punctate, raised in a small elevation above each eye; 3 rd antennomere scarcely longer than its apical width; pronotum rugosely punctate throughout; elytra narrowly margined, carinate on each interval, 8 th and 9 th carinae abbreviated about the level of the base of last abdominal ventrite.......................................................................... P. alvearium Blair, 1938 - Body dorsally not rugose-punctate, shining; canthus wider than lateral length of eye; frons not rugose-punctate, overhanging like eaves on eyes; 3 rd antennomere distinctly shorter than its apical width (5:7); pronotum densely punctate throughout, not rugose; elytra with wide and flattened margins, carinate only 8th interval; the carina terminated before apical declivity of elytron............................................................................... P. watanai sp. nov.