Mites on the body of the damselfly.
I have no idea what kind of mite, so I just selected a Superorder that includes mites.
1.5 mm head to body rear. Found under a rock in the intertidal zone of a saltwater beach. Moved to a grey plastic container for the photos. At first I thought this was a marine mite, i.e. Halacaroidea but have since received an ID at bugguide.net of Order Mesostigmata.
Acari (or Acarina) are a taxon of arachnids that contains mites and ticks. The diversity of the Acari is extraordinary and its fossil history goes back to at least the early Devonian period. As a result, acarologists (the people who study mites and ticks) have proposed a complex set of taxonomic ranks to classify mites. In most modern treatments, the Acari is considered a subclass of Arachnida and is composed of two or three superorders or...