Abstract
Four new species of the genus Trilacuna Tong & Li, 2007, Trilacunaguangwu Ma & Tong, sp. nov. (♂), Trilacunaqingliangfeng Ma & Tong, sp. nov. (♂♀), Trilacunataoyuanyu Ma & Tong, sp. nov. (♂) and Trilacunayunmeng Ma & Tong, sp. nov. (♂), are described from China. Descriptions, diagnoses, and photographs are provided.