Three new species of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Yunnan Province, China Author Ma, Jimeng https://orcid.org/0009-0008-4579-3506 Life Science College, Shenyang Normal University, Shenyang 110034, Liaoning, China Author Bian, Dongju https://orcid.org/0000-0002-9324-8026 Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China Author Tong, Yanfeng https://orcid.org/0000-0002-4348-7029 Life Science College, Shenyang Normal University, Shenyang 110034, Liaoning, China tyf68@hotmail.com Author Yang, Zizhong https://orcid.org/0000-0002-2143-8226 National-Local Joint Engineering Research Center of Entomoceutics, Dali University, Yunnan Dali, 671000, China yangzzh69@163.com Author Zhang, Zhisheng https://orcid.org/0000-0002-9304-1789 Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China zhangzs327@qq.com text ZooKeys 2023 2023-08-14 1174 289 300 http://dx.doi.org/10.3897/zookeys.1174.106130 journal article http://dx.doi.org/10.3897/zookeys.1174.106130 1313-2970-1174-289 FC99CBBB53534F81B6F807A6E8ACCBF3 72D6CE1BE1E0538384A228AE97DE1D46 Genus Trilacuna Tong & Li, 2007 Type species. Trilacuna rastrum Tong & Li, 2007 from Yunnan, China. Diagnosis. See Tong et al. (2020) . Composition. 42 species, including three described here. Distribution. Iran to the Korean Peninsula and south to Sumatra.