On helianthus annuus leaves
Went to water a hibiscus pot plant and found it covered in what at first glance looked like plastic, but turns oout to be a web covered in mites.
Was moving around a bit then stayed still, on top of the leaf.
Looked like a tick? Moved like a spider. Found on a scotch thistle.
White spider mite. Perhaps about 300 microns. Observed under foldscope.
Spider mites on leaves.
Spider mites are members of the Acari (mite) family Tetranychidae, which includes about 1,200 species. They generally live on the undersides of leaves of plants, where they may spin protective silk webs, and they can cause damage by puncturing the plant cells to feed. Spider mites are known to feed on several hundred species of plants.