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Coby Schal

Blanton J. Whitmire Distinguished Professor

Urban Entomology, Insect Behavior, Chemical Ecology, Insect Physiology

Department of Entomology Campus Box 7613, 100 Derieux Place North Carolina State University Raleigh, NC 27695-7613


Our lab takes an integrative approach to urban entomology, with studies ranging from molecular and cellular investigations to pest management and community-wide interventions. Our goal is to address the public health, veterinary, aesthetic, and economic needs of residential, industrial and agricultural communities by developing and disseminating information on pests of homes and other human- built structures. We focus much of our Urban Entomology research on cockroaches and bed bugs. In addition, our broad interests in chemical ecology, behavioral endocrinology, and insect physiology include studies of moths, mosquitoes, sand flies, ants, termites, and bees. In the area of chemical ecology, we are especially interested in sex pheromones that are used in mate-finding, recognition and mate choice, and aggregation pheromones that mediate group formation. In collaborative studies we are examining semiochemicals that mediate oviposition activities of Aedes mosquitoes and Phlebotomus sand flies, and the evolution of pheromone communication in moths. In this area, our lab offers instrumentation and expertise for graduate students and other researchers at NC State. The lab is interested in the medical importance of cockroaches and bed bugs. We are investigating the function of allergens in the biology of the cockroach, the effect of cockroach control on allergen concentrations in homes and schools, and the effects of bed bug-produced contaminants on human health. We are using RNA interference approaches to silence genes that produce allergens in an effort to understand the functions of these proteins in the cockroach. In collaborative studies, we are using molecular markers to understand the genetic structure of cockroach and bed bug populations in both urban and agricultural settings. Our efforts to develop innovative approaches include studies of the efficacy of various interventions, bait acceptance, and insecticide resistance in field-collected cockroaches and bed bugs. Neuroethological studies of gustation use behavioral assays and electrophysiology to understand the mechanisms that underlie sugar-aversion as a behavioral resistance mechanism in cockroaches. Using bioassays and molecular techniques we are evaluating the incidence of resistance in NC and throughout the U.S.


  • Biology and integrated management of urban pests, with emphasis on cockroaches.
  • Chemical ecology, especially pheromone-medicated communication in cockroaches and developing tools for monitoring pest populations.
  • Biology of cockroach allergens and mitigation strategies to reduce environmental allergen concentrations.
  • Cuticular hydrocarbons: Biosynthesis, hemolymph transport, role in behavioral interactions.
  • Behavioral endocrinology and regulation of the cockroach corpora allata and juvenile hormone production.
  • Monitoring insecticide resistance in field-collected cockroaches.
  • Sexual selection and mate-finding tactics in pest and tropical cockroaches.
  • Our lab also collaborates with others on:
    • Evolution of pheromone communication in moths (Gould, Groot)
    • Oviposition attractants in mosquitoes (Apperson)
    • Population genetics of cockroaches and bed bugs (Vargo, Mukha)
    • Nestmate recognition in ants (Silverman)
  • Insect Behavior (ENT 520), 3 credits
  • Seminar in Urban Entomology (ENT 690Y), 1 credit
  • Seminar in Chemical Ecology (ENT 690X), 1 credit

Visit the Schal Lab                            Lab Publications


BS, Biology, State University fo New York at Albany (1976)
Ph.D, Entomology, with W.J. Bell, University of Kansas, Lawrence (1983)
Post-doc, Entomology, with R.T. Carde, University of Massachusetts (1984)