This paper provides taxonomic and biological data on one new and one newly recorded species of Coptotriche Walsingham and one new and one newly recorded species of Tischeria Zeller from Japan. Coptotriche symplocosella Kobayashi & Hirowatari, sp. n. (host Symplocos lucida, Symplocaceae), and Tischeria kumatai Sato, Kobayashi & Hirowatari, sp. n. (host Tilia japonica, Malvaceae) are described. The pupal morphology of C. symplocosella is illustrated with scanning electron micrographs. Coptotriche minuta Diškus & Stonis, 2014 and Tischeria relictana Ermolaev, 1986 are newly recorded from Japan. The female, hostplants (Carpinus, Corylus, and Ostrya species), and immature stages of C. minuta and the adult features, female, and hostplants (Betula species) of T. relictana are described with photographs and drawings for the first time. Mine types and characters of Japanese Tischeriidae are reviewed with photographs.
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