They're on the benches by McLane Hall and they fit the descriptions I've found of berry bugs pretty well
San Diego County, California, US
There were a lot of them on a dead tomato plant and spreading to other plants.
Velvet mite on the beach at low tide.
mite on a moth
Mites on millipede face. Millipede on leaf of Ixerba brexioides (tawari).
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...