On Ulex europaeus
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on Citrus sinensis
Couldn't see any mites though so maybe another kind of spiderweb?
Common Name: Small red mite
Scientific Name: Bryobia praetiosa
Found indoors on desk
Time: 10/1/16 3:08
This one was in a waxed bean plant. The spider mite is only about a millimeter across.
Massive infestation on short grazed plants of gorse. Still expanding.
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.