Tetranychidae

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Vernacular names
• Deutsch: Spinnmilben
• English: spider mites
• Español: ácaros tetraníquidos
• Français: tétranychidés
Tetranychus sp. (click on image to enlarge it)
Author(s): Charles Olsen, USDA APHIS PPQ
Source: IPM Images

Tetranychidae (spider mites)

This is a large family of plant parasitic mites which have 4 pairs of legs in the adult stage. They are usually found on the underside of plant leaves or on fruits. Damage is done by wounding the plant tissue and sucking out the content of the cells with their chelicerae. The infested leaves turn yellow.

The life cycle can be completed in 2 weeks. Many species spin webbings to protect the colonies. The adults are small (0.2 - 0.9 mm) with 5-segmented palpi, two pairs of eyes and needle-like, curved chelicerae. The tarsi have a "thumb claw".

The following genera and individual species are currently entered under Tetranychidae: