Five new species of the genus Ischnothyreus are reported from Singapore: I. an Tong & Li, sp. n., I. brunneus Tong & Li, sp. n., I. dactylinus Tong & Li, sp. n., I. poculum Tong & Li, sp. n. and I. tectorius Tong & Li, sp. n. Morphological descriptions and illustrations are given for all new species.
