Title Two new Aceria species (Acari: Eriophyidae) from Lorestan province of Iran Type of Research Article Keywords Acerini, Apiaceae, Desert poplar, Fauna, Hedge parsley, Salicaceae Abstract During a survey of the eriophyoid mites in Lorestan province of Iran two new eriophyoid mites described and illustrated: Aceria poldokhtariensis Lotfollahi & Bahirai sp. nov. from Populus euphratica Oliv. (Salicaceae) and Aceria torilarvensis Lotfollahi & Bahirai sp. nov. from Torilis arvensis (Huds.) Link (Apiaceae). They are the first eriophyoid mites collected on P. euphratica and T. arvensis respectively, and the later one is the first Aceria species found on plants of genus Torilis. Researchers Parisa Lotfollahi (First Researcher)، Forough Ranjbar Varandi (Second Researcher)، Fereshteh Bahirai (Third Researcher)، Shahryar Jafari (Fourth Researcher)، Jahanshir Shakarami (Fifth Researcher)