Gryllacrididae, or raspy crickets, belong to the monophyletic clade Stenopelmatoidea, and have complex taxonomy. Many genera require revision, including the ones from Southeast Asia. Orthopteran surveys in Kuala Belalong, Brunei Darussalam, Borneo led to the discovery of a new species of apterous gryllacridid from Brunei Darussalam: Melaneremus? bellus sp. nov. We also redescribe Phlebogryllacris venosa (Walker, 1869) and provide images of this species of both live and preserved specimens. In the process of describing, specimens from morphologically similar genera were also examined. We provide some notes on these genera to aid future taxonomic studies.
Keywords: Orthoptera, Melaneremus, Phlebogryllacris, new species, redescription, Orthoptera, Southeast Asia.