Abstract
A new species of scutacarid mites, Archidispus acupalpi sp. nov., is described from Japan based on phoretic females found on the cervical membrane between head and prothorax of carabid beetles belonging to the subtribe Stenolophina of the tribe Harpalini. This new species is closely related to Archidispus yanoi Kurosa, 1984, another phoretic associate of stenolophine carabid beetles, but can easily be distinguished from the latter by the anterolateral expansion of alveolar thickening of opisthosomal seta c1, posteromesial linear extension of alveolar thickening of opisthosomal seta c2, shape and size of coxal seta 3b, and so forth.
