Aulacaspis yasumatsui Takagi (Hemiptera: Diaspididae), an invasive scale insect, attacks different species of Cycas (Cycadales: Cycadaceae) in Taiwan. Development, survival and fecundity of A. yasumatsui were studied on Cycas taitungensis at 24°C, 70±10% RH, and a photoperiod of 12:12 (L:D) h under laboratory conditions. Data on the life history of A. yasumatsui were analyzed using the age-stage, two-sex life table, to address variable development rates among individuals and between sexes. The egg incubation time was 7.26days for both females and males and female nymphal development duration was 28.65days. The development duration of male nymphal stages+pupal stage was 19days. The total pre-oviposition period (TPOP) was 35.92days. The maximum longevity of female adults was 67days and 1day for males. The intrinsic rate of increase (r) was 0.100day -1 , the finite rate of increase (λ) was 1.11day -1 , the net reproduction rate (R o ) was 111.51 offspring /individual, and the mean generation time (T) was 47.24day. Life table data can be used to project population growth, to design mass rearing programs and to establish management tactics to control insect pests.