Larval forms of some species belonging to the terrestrial Parasitengona (Acari: Trombidiformes: Prostigmata) group, which are common in the world, are the ectoparasites on some species causing economic damage. This study was carried out in 2020 to identify ectoparasitic larval mites and their hosts in Diyarbakır and Mardin provinces located the Southeastern Anatolia Region. As a result of the study, Grandjeanella bella Zhang, 1996 and Leptus sp. belonging to Erythraeidae family; Trichotrombidium muscarum (Riley, 1878) belonging to Microtrombidiidae family were determined. All two species and one genus determined in this study are the first records for Southeastern Anatolia Region acari fauna.