The morphology of the juvenile instars of two species of the oribatid mite family Lohmanniidae, Meristacaris sundensis Hammer, 1979 and Cryptacarus promecus Grandjean, 1950 is described and illustrated. We collate data on the morphology of lohmanniid juvenile instars whose complete ontogeny is known, and show that genera are readily identifiable from their juvenile features. The main generic distinctions are presented by the body surface, the morphology and number of body setae, and the structure of the rostrum and genital plates.
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Vol. 17 • No. 3