These mites spin small webs so that is an indication as to what you have bothering your plants. They will attack almost any plant including house plants, ornamentals, trees, shrubs and veggies. The first sign of leaf damage is small dots on the top side of the leaves. Eventually leaves will turn yellow and fall off. Eventually the plant will die.
Damage can be severe where the colonies are numerous.
Flip over the leaves and gently shake them off into soapy water. They will move rapidly once they are disturbed so act quickly. Sometimes it helps to put your wastes around the perimeter of your property to make shelter for the beneficial bugs to overwinter in. Pedatory mites, pirate bugs, big eyed bugs, lady bugs and lacewings are among the natural preditors. Water your garden paths weekly to elimate breeding grounds.