STUDIES ON THE ORIBATEI (ACARI) OF THE TORNETRÄSK TERRITORY IN SWEDISH LAPLAND.

The present paper deals with the species of Oribatei living in a number of northern biotopes. The total number of species found is 127, some of which are new or little known. Most of them are eurytopic but some seem to be strictly bound to one or a few types of environment. In several cases also the eurytopic mites have a tendency to prefer a certain biotope which means that they tend to be strangers in most others. This tendency will be discussed in a following paper. [ABSTRACT FROM AUTHOR]