Abstract
This study reports six leptonetid species from three genera collected in karst-associated forest ecosystems of southern China. Three new midget cave spider species are diagnosed, described, and illustrated: Pararanajiufushanensis Yao & K. K. Liu, sp. nov. (♂, ♀; Fujian Province), P.songyuani Yao & K. K. Liu, sp. nov. (♂; Guangdong Province), and Leptonetelazhaoruii Yao & K. K. Liu, sp. nov. (♂, ♀; Fujian Province). Notably, the female of P.gaofani Lin & Li, 2022 is described for the first time, while the holotype of P.mingxuani Yao & Liu, 2024 is illustrated with detailed images of the male palpal characters. Additionally, Rhyssoleptonetalishan Tong, 2024 is newly recorded in Jiangsu Province, expanding its known geographic range. Detailed distribution records are provided for all species, emphasizing southeastern China's significance as a hotspot for leptonetid diversity and adaptive radiation. These findings refine taxonomic frameworks for karst-associated spiders and enhance understanding of their biogeographic patterns in East Asian karst systems.