Abstract Maksimovich’s rosehip Rosa maximowicziana and Siberian elm Ulmus pumila are recorded as new host plants of Epiclytus ussuricus (Pic, 1933). New data on host plants and phenology in the south of Primorskii Territory are reported for rare species of the longhorn-beetle genera Amarysius, Epiclytus, Exocentrus, and Ropalopus.