The flea beetle genus Pedethma Weise (Coleoptera: Chrysomelidae), occurring in Queensland and New South Wales, Australia, is revised. Pedethma fuscipennis Weise is designated as the type species. Lectotypes are designated for P. fuscipennis Weise, P. malandensis Weise, and P. suturalis Weise. Fourteen new species are described (type locality in parentheses): P. australiensis Lingafelter and Konstantinov (Queensland: Mt. Glorious National Park); P. cookensis Lingafelter and Konstantinov (Queensland: Mt. Cook); P. demiensis Lingafelter and Konstantinov (Queensland: Mt. Demi); P. howdeni Lingafelter and Konstantinov (Queensland: Mt. Lewis); P. humeromaculata Lingafelter and Konstantinov (Queensland: Windin Falls via Butchers Creek); P. kirejtshuki Lingafelter and Konstantinov (New South Wales: Dorrigo National Park); P. kurandensis Lingafelter and Konstantinov (Queensland: Kuranda); P. maculata Lingafelter and Konstantinov (Queensland: Bellenden Ker Range); P. nigra Lingafelter and Konstantinov (Queensland: Bellenden Ker Range); P. pinnipenis Lingafelter and Konstantinov (Queensland: Hugh Nelson Range, 2.5 km S. of Crater National Park); P. pubescens Lingafelter and Konstantinov (Queensland: Bamboo Creek); P. seymourensis Lingafelter and Konstantinov (Queensland: Seymour Range, Polly Creek); P. sinuatipenis Lingafelter and Konstantinov (Queensland: Mt. Bartle Frere); and P. weisei Lingafelter and Konstantinov (New South Wales: Monga State Forest). A redescription of the genus and descriptions, diagnoses, and key to all species are presented.

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