Abstract
BACKGROUND: The genus Theridion Walckenaer, 1805 comprises 577 species, distributed all over the world and it is common in habitat species, such as grasses, barks and deciduous layers. NEW INFORMATION: A new cobweb species, Theridion ganjiangyuan Zhou, sp. nov., is described from the Ganjiangyuan National Nature Reserve, in Jiangxi Province, China. A detailed description, diagnosis, illustrations and a distribution map of the new species are provided.