Abstract: This paper deals with the identification of 30 species of Acrididae under 22 genera belonging to 6 subfamilies from Malaysia. Vitalisia bangiensus sp. nov. has been described in detail. The male of Sedulia perakensis Willemse, while females of Eucoptacra minima Ramme and Pagdenia rufipes Miller have been recorded and described for the first time. It is also found that Meltripata bolivari Willemse and Pagdenia rufipes Miller live in two forms, i.e. fully winged and reduced winged form. In addition, keys for the local genera and species have also been constructed.

Key words: Orthoptera, Acridoidea, Acrididae, grasshoppers, fauna, new species, Malaysia