Two new species of oribatid mites of the genus Dicrotegaeus (Oribatida, Cerocepheidae) are described from alpine soils of New Zealand. Dicrotegaeus mariehammerae sp. nov. shows straight lamellae distally, rostrum with a medial incision, the notogastral lateral tubercles developed, three pairs of adanal setae and triangular epimeral tubercles E4p. In Dicrotegaeus incurvus sp. nov. the anterior parts of the lamellae are curved medially, the rostrum has a strong longitudinal ridge, the notogastral lateral tubercles are absent, two pairs of adanal setae are present and the epimeral tubercles E4p are triangular. The type species, D. mirabilis Luxton, 1988 is the only other species in this genus and shows straight lamellae distally, the rostrum complex with a multiperforate projection, lateral tubercles present, two pairs of adanal setae and rectangular epimeral tubercles E4p. A new generic diagnosis and an identification key to all species of Dicrotegaeus are provided.
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