Taxonomic Study Of Trilacuna Spiders From Chongqing And Adjacent Areas,China (Arachnida, Araneae)

A taxonomic study on the oonopid spiders of the genus Trilacuna Tong & Li, 2007, collected from Chongqing and adjacent areas was carried out. The genus Trilacuna spiders have very small body size, mainly live in forest leaf litter and other cryptic habitats. Based on a large number of domestic and foreign literatures, the Trilacuna spider specimens were identified. A total of 15 new species: Trilacuna beiwan sp. nov, Trilacuna chishui sp. nov, Trilacuna congeata sp. nov, Trilacuna datang sp. nov, Trilacuna fugong sp. nov, Trilacuna gongshan sp. nov, Trilacuna kuankuoshui sp. nov, Trilacuna latizona sp. nov, Trilacuna setulasa sp. nov, Trilacuna simianshan sp. nov, Trilacuna tiankengensis sp. nov, Trilacuna wenfeng sp. nov, Trilacuna wuhe sp. nov, Trilacuna xiaoheishan sp. nov, Trilacuna xinping sp. nov; and 2 known species were recognized: Trilacuna angularis Tong & Li, 2007, Trilacuna rastrum Tong & Li, 2007. The detailed morphological description were given to all the species, about 334 photos and a key to all the species were provided. The geographical distribution was provided. According to the result of the preliminary identification, the Trilacuna spider has a potential wide distribution in southwest China.All specimens are preserved in Shenyang Normal University(SYNU).