In order to survey eriophyoid mites of northwest of Urmia County, West Azerbaijan Province, Iran, samplings were done on spurges during summer 2021 and one new species, Eriophyes urmiae Lotfollahi & Mohammad-Doustaresharaf sp. nov. was found in Qaleh Sardar of Nazluchay Rural District as vagrant on Euphorbia sp. (Euphorbiaceae) leaves. This is the fourth eriophyoid mite described on spurges in Iran.