A new subspecies of the Asian mantis Hierodula patellifera (Audinet-Serville, 1839), Hierodula patellifera daitoanassp. nov., is described based on specimens collected from the Daito Islands, the Ryukyus, Japan. This new subspecies is distinguished from the nominotypical subspecies H. patellifera patellifera in adulthood by the relatively larger body size, the larger number of antennal segments, the presence of a white marking along the dorsal-inner surface on the procoxa, and marginal spines of the procoxa comprising two large and several small tooth-like projections.