Tetranychus urticae

Tetranychus urticae, commonly known as the two-spotted spider mite, is a species of mite that is considered a significant pest in agriculture. This mite species is known for its ability to cause extensive damage to a wide range of crops and plants.

Taxonomy

The two-spotted spider mite belongs to the genus Tetranychus, which is part of the family Tetranychidae. This family is known for its many species that are pests of various crops and plants.

Description

Tetranychus urticae is a small mite, typically less than 1 mm in length. It is named for the two dark spots on its abdomen, although the color of the mite can vary depending on its diet and environment. The mites are typically pale or greenish, but can turn orange or red during periods of stress.

Life Cycle

The life cycle of Tetranychus urticae consists of four stages: egg, larva, nymph, and adult. The entire life cycle can be completed in as little as a week under optimal conditions, allowing populations to rapidly increase in size.

Damage to Plants

Tetranychus urticae feeds on the underside of leaves, piercing the plant cells to consume the contents. This feeding damage can cause the leaves to develop a stippled or bronzed appearance, and severe infestations can lead to leaf drop and plant death.

Control

Control of Tetranychus urticae can be challenging due to its rapid reproduction and the development of resistance to many pesticides. However, various methods can be used to manage populations, including the use of biological control agents such as predatory mites, and cultural practices such as crop rotation and the removal of infested plant material.

See Also

• Tetranychidae
• Biological control
• Pesticide resistance