New faunistic records and abundant illustrations are provided for Procoptodesmus diffusus Brolemann, 1920, Nonnodesmus niger Attems, 1953 and Stylodesmus horridus Cook, 1895. The genera Cachania Schubart, 1955 and Udodesmus Cook, 1896 (= Hercodesmus Cook, 1896, = Euhercodesmus Schubart, 1955, both syn.n.) are reviewed and rediagnosed, with keys given to all of their four and nine species, respectively, including C. spiniger sp.n., C. taenia sp.n., C. furcata sp.n., U. harpago sp.n. and U. liber sp.n.