Naiazetes reevesi, a new genus and species of oribatid mite, is based
on adult specimens from semi-aquatic habitats in eastern Quebec and Al
abama. This genus is tentatively placed in the Zetomimidae based on th
e shared presence of an unusually large male genital sclerite in Naiaz
etes, Heterozetes and Zetomimus. Naiazetes shows unique sexual dimorph
ism, with differences in shape of the rostrum, and shape and position
of genital papilla Va between male and female specimens.