Two new species of oribatid mites (Acari, Oribatida) of the superfamily Oppioidea are described on the basis of adult specimens from upper soil and leaf litter in the primary evergreen lowland rainforest of Amazonian Peru. Lasiobelba (Antennoppia) parachistyakovi Ermilov n. sp. (Oppiidae) is similar to L. (Antennoppia) chistyakovi Ermilov and Kalúz, 2012, but differs by the thick bothridial setae with short cilia and longer notogastral setae. Hammerella (Woasella) huanucoensis Ermilov n. sp. (Granuloppiidae) is similar to H. (Woasella) parasufflata Ermilov, Sandmann, Marian and Maraun, 2013, but differs by the thin costulae, shorter notogastral setae, and the absence of one tubercle anterior to each lamellar seta. The taxonomic status of the genus Varioppia Mahunka, 1985 is discussed, resulting in the following taxonomic proposals: Hammerella (Woasella) J. and P. Balogh, 2002 (=Varioppia Mahunka, 1985 n. syn.), Hammerella (Woasella) radiata (Mahunka, 1985) n. comb. An identification key for known species of Hammerella (Woasella) is given. Two oppioid species, Hammerella (Woasella) sufflata (Franklin and Woas, 1992) and Teratoppia (Teratoppiella) brevipectinata Balogh and Mahunka, 1978, are recorded for the first time in Peru.