Three new species of eriophyoid mites are described from Karadag Nature Reserve, Crimea: Cecidophyopsis cephalarius n. sp. from Crimean endemic Cephalaria demetrii (Caprifoliaceae), Aculus althaeus n. sp. from Althaea cannabina (Malvaceae) and Aculus karadagensis n. sp. from Ballota nigra (Lamiaceae). Seven new records are reported from Karadag: Aceria ankarensis Denizhan et al. 2006 from Dianthus capitatus, Aceria cichorii Petanović, Boczek, Shi 2000 from Cichorium inthybus, Aceria paradianthi Keifer 1952 from Dianthus capitatus, Aceria stipacea Sukhareva, 1983 from Stipa capillata, Aculops acraspis (Nalepa 1891) Nalepa 1892 from Medicago falcata, Tegonotus tataricis (Farkas 1963) from Acer tataricum and Rhyncaphytoptus amplusKeifer 1961 from Acer tataricum.