Takagi, S. 1999 For a better understanding of Aulacaspis: the Calcarata species group (Homoptera: Coccoidea: Diaspididae).. Insecta Matsumurana (New Series) 55: 133-180.

Notes: The calcarata species group of Aulacaspis comprises seven species occurring in Southeast Asia, A. calcarata (=A. vitis: Williams and Watson, 1988), A. marginata, A. mesuae, A. calophylli, A. baukiana, A. mesuarum, and A. pinangiana, spp. nov., which are commonly characterized by having spurlike processes on the pygidium. In the body shape of the full-grown adult female they represent two remarkably different types: five species belong to the rosae type, and the other two to the vitis type. Supposing the rosae type originated from the vitis type, the change can be understood in terms of growth phenomena including acceleration and truncation. The view is adopted that species of the rosae type appeared in parallel among different species groups of Aulacaspis, and that the division of Aulacaspis species into the rosae type and the vitis type, is tranferred to Aulacaspis, and Superturmaspis and Semichionaspis, both based on that species nomenclaturally, are synonymized with Aulacaspis. Myrtaspis, gen. nov., with M. marginalis, sp. nov., for the type-species, closely related to Aulacaspis, and also similar to Chionaspis and Narayanaspis for other reasons. Chionaspis syzygii, Semichionaspis jombosicola and S. putianensis are transferred to Myrtaspis. Fraseraspis litseae, gen. et sp. nov., is described to afford an example of the emergence of a body shape similar to the rosae type in another lineage.