Nine species of Aulacaspis are treated under four subtitles. 1) A. connari, n.sp., from Luzón, A. swintoniae, n.sp., from Malaya, and A. nephelii Takagi from Malaya may be referred to the tubercularis species group, but they make the group broadened and obscurely bordered. 2) A. buteae Takahashi, which was described from Thailand originally and is recorded from Nepal in this paper is characterized in having enlarged microducts forming clusters dorsally on the prosoma, metathorax, and first abdominal segment; A. connarorum, n.sp., from Malaya also has enlarged microducts, which are strewn ventrally on the prosoma. 3) A. bauhiniae and A. phanerae, n.spp., are described from Borneo but, as a possibility, they may belong to a large variable population occurring across the island, representing extreme local forms of the latter. 4) A. robusta Takahashi has been known from Taiwan and is recorded from Borneo in the present paper, but there are between the Taiwan and Borneo forms some differences which are to be explained; A. projecta Takagi, which has been known from Japan and southern continental China, is recorded from Taiwan, and comparisons made among samples from Taiwan and Japan suggest that this species, too, is considerably variable.