If so, an Auburn Agriculture publication says they are nothing to worry about. If they are two-spotted spider mites, an insecticidal soap will take care of the problem. First, remove and throw away (do not compost) any infected leaves. Spray tops and bottoms of the remaining leaves and follow the directions on the label. Also, see if there is anything else that is stressing your plants and fix that. Such as not enough or too much sun, incorrect amount of moisture, need for air circulation or lacking fertilizing. Healthy plants aren’t usually impacted by insects.
Thanks for writing!