Aculodes dubius (Nalepa), Aculodes mckenziei (Keifer) and Aceria tosichella Keifer were recorded for the first time in Hungary. Festuca pratensis, Phleum phleoides and Bromus inermis were found as new host-plants of Aculodes dubius, althought other plant species in these generas are known to be hosts of this mite. Aceria tulipae (Keifer) was indentified on Phleum pratense and Aceria tenuis (Nalepa) on Phleum phleoides, which were also new host-plants for them.