The richness, diversity, abundance and prevalence of mite species associated with sigmodontine rodents of different species in Entre Rãos province, Argentina are studied. Five of the six species of mites were reported for the first time in the study area. The richness and diversity of mites was higher on
Oligoryzomys flavescens
and
O. delticola than on
Akodon azarae
.
Androlaelaps rotundus
was dominant and exhibited higher values of mean abundance and prevalence on
A. azarae,
Mysolaelaps microspinosus
on
O. flavescens and
Gigantolaelaps mattogrossensis
on
O. delticola.
