| abstract | The present study is based on oribatid mite material (Acari, Oribatida) collected during an expedition to Panguana (Amazonian Peru) in 2013, organized by the Bavarian State Collection of Zoology (Germany). A list of identified taxa, including 33 species, 27 genera and 19 families, is provided; of these, 13 species are recorded for the first time in Peru. Three new species, belonging to the genera Xenillus (Liacaridae), Hermannobates (Hermanniellidae) and Mesoplophora (Mesoplophoridae), are described. Xenillus amicorum Ermilov spec. nov. is similar to X. sanctipauli PerezInigo & Baggio, 1980, but differs by the presence of long lamellar cusps, strong inner tooth on each lamellar cusp and thick lamellar setae. Hermannobates dillerorum Ermilov spec. nov. is similar to H. dilatatus Ermilov, Sandmann, Marian & Maraun, 2014, but differs by the presence of bothridial setae with well developed heads, exuvial setae f2E pointed distally and exuvial setae d1E, e1E and f1E comparatively long. Mesoplophora (Mesoplophora) quasigaveae Niedba.a spec. nov. is similar to M. (Mesoplophora) gaveae Schuster, 1962, but differs by the not ciliated prodorsal setae, different arrangement of ventral setae, and location of anal setae an1 in posterior half of plates. Deuto- and tritonymphal instars of M. (Mesoplophora) quasigaveae Niedba.a spec. nov. are described. |