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Two new genera and four new species of the mite family Neopygmephoridae (Acari: Pygmephoroidea) are described from the alpine zone (1600–1900 m a.s.l.) of the Central Otago region of the South Island of New Zealand: Protobakerdania Khaustov and Minor gen. nov. with the type species Pygmephorus togatus Willmann, 1942, Neobakerdania Khaustov and Minor gen. nov. with the type species Neobakerdania pilosa Khaustov and Minor sp. nov., and the species Protobakerdania diseta Khaustov and Minor sp. nov., Troxodania minuta Khaustov and Minor sp. nov., and Bakerdania alpina Khaustov and Minor sp. nov. Eight species are moved to Protobakerdania Khaustov and Minor gen. nov. from Bakerdania Sasa, 1961: P. aperta (Rack and Kaliszewski, 1985) comb. nov., P. arvorum (Jacot, 1936) comb. nov., P. arvorum nodulosa (Mahunka, 1969b) comb. nov., P. baloghi (Mahunka, 1969b) comb. nov., P. crenata (Mahunka, 1969b) comb. nov., P. pristinus (Mahunka, 1968) comb. nov., P. randae (Sevastianov and Zahida Al Douri, 1989) comb. nov., and P. togatus (Willmann, 1942) comb. nov.

Three new species of oribatid mites of the family Punctoribatidae (Acari, Oribatida) are described from alpine bogs of the Central Otago region in the South Island of New Zealand. Macrogena hexasetosa sp. nov. is morphologically most similar to M. brevisensilla Ermilov & Minor, 2015, however, it differs from the latter by larger body size, the presence of six pairs of genital setae, notogastral and ano-adanal setae of medium size, setiform rostral setae, narrower tutorial cusps, the absence of antero-ventral teeth on genua I, II and femora II, and by the absence of striae on the subcapitular mentum. Porallozetes badamdorji sp. nov. differs from the type species— P. dispar (Hammer, 1973)—by larger body length, the presence of interlamellar setae, short and clavate bothridial setae, anterior notogastral margin, notogastral setae of medium size, semi-oval dorsophragmata, and by the position of notogastral porose areas A2 posteriorly to A1 . Safrobates gerdi sp. nov. differs from the type species— S. miniporus Mahunka, 1989—by larger body size, the presence of setiform rostral setae, and by notogastral setae of medium length. Porallozetes and Safrobates are recorded in New Zealand for the first time. Generic diagnoses for Macrogena , Porallozetes and Safrobates are given.

A new oribatid mite genus, Zealandozetes gen. nov. (Oribatida, Maudheimiidae), with type species Zealandozetes southensis sp. nov., is proposed and described based on adult and juvenile instars. It inhabits the soil under and around cushion-forming plants in the high-altitude alpine zone of two mountain ranges (the Pisa Range and The Remarkables) in the South Island of New Zealand. It is distinguished from species of Maudheimia by having pteromorphs reduced to pleural carinae, notogastral saccules, small pedotecta I, and both postanal porose area and Ah expressed as complex saccules. Juveniles are similar to those of Maudheimia, except the humeral organ of Z. southensis is cupule-like and gastronotic microsclerites are lacking. We give a revised diagnosis for Maudheimiidae and discuss both supportive and contradictory evidence for inclusion of Zealandozetes. Finally, we discuss endemism of Zealandozetes with reference to the knowledge of New Zealand biogeography and its oribatid fauna.

Collembola were collected from soil in the alpine belt (1600-1900 m a.s.l.) of the Southern Alps of New Zealand. A list of species found is provided. Austrodontella monticola sp. nov., the third species of a Odontellidae genus with a southern distribution is described. The other two species in the genus occur in southern Australia and in the Indian Ocean sector of the Subantarctic respectively. Notes on A. trispina (Womersley, 1935), the type species of the genus, are provided.