Abstract
Descriptions of one new species of Dinarthropsis and five new species of Goerodes (Trichoptera, Lepidostomatidae) from the western Indonesian islands of Sumatra and Nias are given. Redescriptions of Dinarthropsis picea, Goerodes abruptus, brevior, doligung and subanganus are provided, including first descriptions of the male of G. abruptus and the female of G. doligung.