The Scutacarid Mites of Japan. XV. Archidispus palcuapi, A New Species Phoretic on Acupalpus (Palcuapus) inornatus Bates (Coleoptera, Carabidae)

摘要

A new species of scutacarid mites, Archidispus palcuapi, is described from Japan on the basis of the phoretic females found on the cervical membrane between head and prothorax of the carabid beetle, Acupalpus {Palcuapus) inornatus BATES. This new species is readily distinguished from all the known congeners by the following characteristics: cupules ia and ip are close to opisthosomal dorsal setae d and h2, respectively; coxal setae la, 2a, 4a, 4b and 4c are exceedingly modified; coxal setae 4a and 4b are inserted close by apodemes 4 and the posterior margin of coxisternal plates IV, respectively.