Oribatid mites (Acari: Oribatida) are one of the most numerous and dominant groups of soil inhabitants that play an important role during soil formation and its biological processes. The paper presents a full list of oribatid mites known of Vietnam (excluding Astigmata) based on the collected and identified species as well as on literature records since 1967 to 2019. | HNUE JOURNAL OF SCIENCE DOI 2354 0039 Natural Sciences 2020 Volume 65 Issue 6 pp. 61 69 This paper is available online at http ORIBATID MITES ACARI ORIBATIDA OF VIETNAM SPECIES DIVERSITY AND DISTRIBUTION CHARACTERISTICS Abstract. Oribatid mites Acari Oribatida are one of the most numerous and dominant groups of soil inhabitants that play an important role during soil formation and its biological processes. The paper presents a full list of oribatid mites known of Vietnam excluding Astigmata based on the collected and identified species as well as on literature records since 1967 to 2019. Totally 726 oribatid species belonging to 245 genera 90 families and 41 super families have been recorded in Vietnam. These oribatid mites species are identified and analyzed along with their distributions known according to the eight natural and man made factors including 1 natural region 2 soil type 3 climate zone caused by elevation above sea level 4 habitat type 5 distance to the sea 6 climate season 7 soil vertical distribution and 8 oribatid body size. Keywords Oribatid mite Oribatida fauna distribution characteristics natural amp man made factor Vietnam. 1. Introduction Oribatid mites Acari Oribatida are small arachnids with body sizes usually ranging from to millimeters. They are one of the most numerous and dominant groups of soil inhabitants that play an important role during soil formation and its biological processes. Because of their high species diversity and high population density as well as an essential role in soil ecosystem oribatid mites have been investigated worldwide Dugés 1834 Michael 1898 Grandjean 1953 Balogh 1958 Gilyarov amp Krivolutsky 1975 Aoki 1999 Jun Chen Dong Liu Hui Fu Wang 2010 Beron 2018 . Oribatid community structure particularly their species diversity population densities and distribution are easily recognized features of soil and are closely related to natural and anthropogenic conditions
