Indonesia merupakan negara tropis yang mempunyai keanekaragaman fauna tinggi termasuk Acarina. Acarina yang hidup di tanah diantaranya berperan membantu proses dekomposisi dengan memakan sisa bahan organik. Tempat Pembuangan Sampah Terpadu (TPST) Piyungan terletak di kabupaten Bantul termasuk TPST terbesar di Yogyakarta. Penelitian ini bertujuan mengetahui jenis Acarina tanah dan peranan Acarina serta faktor-faktor berupa suhu tanah dan pH tanah yang berpengaruh terhadap kemelimpahan Acarina tanah. Metode ini dilakukan dengan Pengambilan sampel dilakukan pada 4 lokasi yaitu zona 1, zona 2, zona 3 dan zona pengolahan limbah dengan titik sampling yaitu utara, tengah dan selatan, diambil 15 titik setiap zona. Acarina diisolasi menggunakan barlese tullgreen. Acarina dipreparasi dan diindentifikasi menggunakan buku Manual of Acarology (Krantz, 1978) dan buku Oribatid Mites of the Neotropical Region II (Balogh, 1990). Hasil yang diperoleh meliputi 19 spesies yaitu Haemolaelaps sp., Gigantolaelaps sp., Androlaelaps sp., Macrocheles sp., Acarus sp., Glycyphagus sp., Histiostoma sp., Scheloribates sp., Ischeloribates sp., Peloribates sp., Dynatozetes sp., Mochloribatula sp., Allogalumna sp., Neopilizetes sp., Pergalumna sp., Bdella sp., Damaeus sp., dan Uropoda sp. dan famili Cryptognathidae. Peranan Acarina di TPST Piyungan adalah Parasit, Predator, Saprophagoes, Fungivore, Bacterivore. Faktor seperti pH tanah dan suhu mempengaruhi kemelimpahan Acarina.

Indonesia have high biodiversity of invertebrate fauna including mites. In soil, mites help to decomposition process, their consumer organic matter. Integrated waste disposal Piyungan is center waste in Yogyakarta. The purpose of this research is to study diversity of soil mites, role in soil and enviromental factor such a soil temperature and soil pH affect to the abundance of soil mites. Method of this research was take 4 located is zone 1, zone 2, zone 3 and zone for processing waste in TPST Piyungan, each location collected fifteen samples, the samples was isolated using barlese tullgreen, prepared and identified in laboratory of parasitology UGM. Result of this research was 13 family, 19 species mites in TPST Piyungan that is Haemolaelaps sp., Gigantolaelaps sp., Androlaelaps sp., Macrocheles sp., Acarus sp., Glycyphagus sp., Histiostoma sp., Scheloribates sp., Ischeloribates sp., Peloribates sp., Dynatozetes sp., Mochloribatula sp., Allogalumna sp., Neopilizetes sp., Pergalumna sp., Bdella sp., Damaeus sp., and Uropoda sp. role in TPST Piyungan is Parasite, Predator, Saprophagous, Fungivore, and Bacterivore and enviromental factor affect abundance of soil mites

Kata Kunci : Acarina, TPST Piyungan, peranan