A new mite species, Zetzellia camphorae sp. n. (Acari, Stigmaeidae), is described and illustrated based on adult females. Mites were collected from leaf domatia of camphor trees, Cinnamomum camphora (L.) J. Presl. (Lauraceae) infested with the eriophyid mite, Aceria sp. (Eriophyidae) in Kyoto, Japan. An identification key to the adult females of the Japanese Stigmaeidae is provided.