ABSTRACTThe anamorph ofThuemenella cubisporais shown to be a species ofNodulisporium, andT. cubisporais referred to the Xylariales, Xylariaceae. The remaining species ofThuemenellaare reevaluated and considered congeneric withSarawakus lycogaloides. Sarawakusis recognized for members of the Hypocreales, Hypocreaceae, havingHypocrea-like stremata and eight, unicellular, warted or tuberculate, green, pale yellow or rarely colorless ascospores. The following are placed inSarawakus: Thuemenella brittanica, T. fragilis, T. hexaspora, T. izawae, T. sordida, Hypocrea subtrachycarpa, andH. trachycarpa.The new speciesSarawakus roseusis described and illustrated.