Abstract
BACKGROUND: The spider genus Trilacuna Tong & Li, 2007, currently comprises 32 species known from China, of which 15 species are from Yunnan and one species, i.e. T. wumanshan Tong, Yang & Zhang, 2023 is recorded from the Nangunhe Nature Reserve, Yunnan. NEW INFORMATION: Two new Trilacuna species, Trilacuna jimengi Dai & Tong, sp. nov. (♂♀) and Trilacuna nangunhe Dai & Tong, sp. nov. (♂♀), are described, based on specimens collected from the Nangunhe Nature Reserve, Yunnan Province. Morphological descriptions and photomicroscopy images of the new species are given.