This paper reviews and summarizes preliminary data on the taxonomy, di
stribution, and ecology of oribatid mites of Canadian peatlands, prima
rily those of eastern Canada. This fauna is a heterogenous assemblage
comprising 71 species in 49 genera and 34 families, found in four main
types of habitats: aquatic, mesic, xeric, and epigeal. About half of
the oribatid fauna of peatlands, and most aquatic species, are restric
ted in distribution to the Nearctic. Oribatid taxa known or suspected
to be parthenogenetic are much better represented in peatlands than in
the general Canadian fauna. Data on the feeding habits of odonate lar
vae in Newfoundland bog pools, based on gut content analysis, show tha
t oribatid mites, in particular species of Limnozetes Hull and Hydroze
tes Berlese, are common prey of species of Aeshna Fabricius, Leucorrhi
na Brittinger, and Libellula L. A synopsis of available data suggests
that assemblages of Limnozetes species may be useful in characterizing
peatlands.