LAUSR

Abstract Thirteen spider species belonging to the family Mysmenidae Petrunkevitch, 1928 are reported from Xishuangbanna Tropical Botanical Garden (XTBG), Menglun Township, Mengla County, Yunnan Province of China. One genus and five species are documented as new to science: Mengmenabannagen. nov. et. sp. nov. (♂♀), Mengmenayulinsp. nov. (♀), Mosuheguomusp. nov. (♂♀), Mysmenaluosuosp. nov. (♂♀), and Mysmenadaisp. nov. (♀). One species is proposed as a new combination: Mosuzhengi (Lin & Li, 2008) comb. nov. (♂♀, ex Mysmena Simon, 1894). The females of Microdipoenamenglunensis (Lin & Li, 2008), Mysmenaarcilonga Lin & Li, 2008, Mysmenafurca Lin & Li, 2008, and Mysmenarostella Lin & Li, 2008 are described for the first time. Three known species are re-examined and photographed: Gaoligongataeniata Lin & Li, 2014, Mysmenabiangulata (Lin & Li, 2008), and Mysmenacornigera (Lin & Li, 2008). Morphological diagnoses and illustrations are provided for these thirteen mysmenid species.