The genus Desicasta Thomson, 1878 is comprehensively reviewed, and the formerly eight species are reduced to three. Redescriptions of previously known species, a key for identification, and illustrations of the three species are provided. Desicasta sculptilis Thomson, 1878, Moscheuma sebosum Neervoort van de Poll, 1886, and Moscheuma opaca Kraatz, 1898 are placed as new junior synonyms of Desicasta lobata (Olivier, 1789). Desicasta laevicostata (Neervoort van de Poll, 1886) is a new junior synonym of Desicasta reichei (Thomson, 1860). Desicasta nonfriedi Schoch, 1896 is a new junior synonym of Amithao erythropus (Burmeister, 1842).