Research
Our research addresses three major questions about herbivorous insects:
- What insect species eat plants?
- Why do they eat what they eat? (And not something else?)
- How can we use general biodiversity theory to address practical problems in agriculture and conservation?

We address the first question by working on the systematics of sap-sucking bugs, in particular aphids and scale insects (Hemiptera: Sternorrnyncha: Aphidomorpha). We find and describe species, estimate phylogenetic relationships among species, and make tools to manage information about species. The other questions we primarily address with modeling and comparative approaches.