Lauren Diepenbrock with D-Vac In the course of her doctoral studies at the University of Missouri, Lauren Diepenbrock, Ph.D. learned how to sample insects in tallgrass prairies with a gasoline-powered D-Vac. Leave a Reply Cancel reply This site uses Akismet to reduce spam. Learn how your comment data is processed. Search Search for... Search Subscribe to Entomology Today! Enter your email address to subscribe to Entomology Today. You'll receive notifications of new posts by email. Email Address Get Certified!