Abstract
The fourth subgenus of Orius from Japan and Taiwan, Paraorius YASUNAGA and MIYAMOTO, is diagnosed, and the single species included in the subgenus, Orius (P.) tantillus (MOTSCHULSKY) is reported from Japan with detailed distributional records and diagnosed. Keys to Japanese and Taiwanese subgenera and species are given. A note on an European species, O. laevigatus, recently introduced to Japan, and a check list of Orius species of the world are also provided. This is the final part of a series of revision treating Orius from Japan and Taiwan.
