Tetranychus is a genus of spider mites known for their small size and plant-feeding habits. These pests are typically less than 1 millimeter long and can be found on a variety of plants, including crops and ornamental species. They are characterized by their eight legs and distinctive webbing, which they produce to protect themselves and their eggs. These mites can cause significant damage to plants by feeding on their sap, leading to yellowing leaves and reduced growth. Tetranychus species, such as the two-spotted spider mite, are common agricultural pests and can be challenging to control due to their rapid reproduction and resistance to some pesticides.