A reddish adult female (left) and yellowish to green nymphs of twospotted spider mite, Tetranychus urticae.

A reddish adult female (left) and yellowish to green nymphs of twospotted spider mite. Kern County.   Credit: David R. Haviland
A reddish adult female (left) and yellowish to green nymphs of twospotted spider mite, Tetranychus urticae. Credit: David R. Haviland