The Bittacidae of South China consist of two species of Bicaubittacus and eight species of Bittacus, among which three species are described here as new to science. Bittacus acutus sp. n. from Guangxi is recognized mainly by the hat-shaped epandrial lobe with an acute ventro-distal process in the male genitalia. Bittacus shaoguanensis sp. n. from Guangdong is distinguished by the triangular epandrial lobe in the male genitalia, and a V-shaped streak in the central part of wings. Bittacus longilobus sp. n. from Guangdong is recognizable by the main body of the epandrial lobe trapezoid, with an elongate ventro-distal lobe twice as long. The number of described species of the Chinese Bittacus is now raised to 41. A key to the species of Bittacidae in South China is provided.