He lists his current areas of interest as "Insect systematics and biology. Biosystematics of Lepidoptera, especially basal lineages. Conservation biology of invertebrates." He received a Ph.D. from the University of California, Berkeley.
Caterpillars of Eastern North America : A Guide to Identification and Natural History. Princeton, NJ : Princeton University Press, 2005. ISBN 0-691-12143-5 (cl. : alk. paper) ISBN 0-691-12144-3 (pb. : alk. paper)