| abstract | During a study on the plant samples of Trifolium pratense L. (Leguminosae) collected in Iranian historical village, Kandovan of Osku region, Aculus haddadi Lotfollahi & Tajaddod sp. nov. was identified as a vagrant species and herein described and illustrated. In addition, a key to the known Aculus mite species collected on Leguminosae plants worldwide and information about their type host, type locality and habitus and figures of their prodorsal shield patterns are provided. |