Two spotted Spider Mite, Tetranychus urticae: Adult two-spotted spider mites are 1/50-inch long and pale greenish to crimson in color. Females are marked with two dark blotches. Mated adult females overwinter in the cover of vegetation in fields and along roadsides and hedgerows. They begin feeding and laying eggs when temperatures rise in the spring, and several generations develop each season. Although wingless, they are highly mobile, as they disperse by "ballooning" in the wind on small silken threads that they secrete while feeding.