Acari: Tetranychidae: Tetranychus lintearius - Gorse Spider Mite
Observed by Andy Altman in 2011.
Not much of this gorse bush wasn't covered in spider webs.
Spider mite on Pebble Pinchusion
Red spider mites on Brown-eyed Primrose, Death Valley
02 Mar 2016.
Buckingham Springs, Bucks Co, PA.
Found on gardenia in the house.
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.