Tetranychus urticae
Spider mites have a very broad host range, including a range of agricultural and horticultural crops, as well as attacking some ornamental plants. Spider mites are very tiny; the adult females are only 0.3-0.5 mm long and the males are even smaller. They are often red, brown, green or yellow in color and they can be seen clearly with the aid of a hand lens. The immature stages resemble the adults except they have six legs. They feed on the undersides of leaves, causing leaves to display yellowing or bronzing appearance. The life cycle of a spider mite takes approximately 1-2 weeks to complete depending on environmental conditions and consists of five developmental stages: egg, larva, protonymph, deutonymph and adult.