Abstract
Insectivorous pitcher plants have long been favored by many Japanese hobbyists. Some species of the family Sarraceniaceae, endemic to northern America, have been artificially hybridized for a considerable period in Japan. Three species of the genus Sarraceniopus (Histiostomatidae) have been recorded from the cylindrical or tube-like leaves containing dead and decomposing insects in the U.S. and Canada. Leaves collected from the Kyoto University Experimental Farm (Kyoto Prefecture), Atagawa Tropical and Alligator Garden (Shizuoka Prefecture) and a flower shop in Tsukuba (Ibaraki Prefecture) were investigated for Sarraceniopus mites in Japan. As a result, two species of the genus were collected: Sarraceniopus hughesi (Hunter & Hunter, 1964) was a new record in Japan and a new species, S. nipponensis sp. nov. is described here.