adult female twospotted spider mite Early-career professional entomologist Rebecca Schmidt-Jeffris, Ph.D., specializes in research on mite pests of crops, such as the twospotted spider mite (Tetranychus urticae) and their biological control. Leave a Reply Cancel reply This site uses Akismet to reduce spam. Learn how your comment data is processed. Subscribe to Entomology Today! Enter your email address to subscribe to Entomology Today. You'll receive notifications of new posts by email. Email Address Search Search for... Search Get Certified!