The present study is based on oribatid mite material (Acari, Oribatida) collected in 2014 from Sphagnum magellanicum swamps of southern Chile. A list of identified taxa, including 41 species, 33 genera and 23 families, is presented. Two species (Gehypochthonius urticinus, Zealandozetes southensis), two genera (Zealandozetes, Tutorozetes) and one family (Maudheimiidae) are recorded in the Neotropical region for the first time. Seven species (Nanhermannia dorsalis, Cultroribula bicuspidata, Anderemaeus hammerae, Membranoppia (Pravoppia) patagonica, Moritzoppia keilbachi, Subiasella (Lucioppia) hauseri, Allosuctobelba diceros), one subgenus (Subiasella (Lucioppia)), three genera (Gehypochthonius, Moritzoppia, Cultroribula) and one family (Gehypochthoniidae) are recorded in Chile for the first time. A new species of the genus Tutorozetes (Punctoribatidae) is described. Tutorozetes incisirostris sp. nov. differs from the type species, Tutorozetes termophilus Hammer, 1967, by the presence of a wavy rostrum with a median incision, distinct striate body surface and longer lamellar setae. A new generic diagnosis and systematic placement in Ceratozetoidea for Tutorozetes are proposed.
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