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George C. Hamilton

Extension Specialist in Pest Management
George C. Hamilton headshot.

Pest Management Officee


My research interests are in the area of implementing integrated pest management programs and the examination of pesticide usage patterns in New Jersey. These interests led to the implementation of an IPM program in eggplant. Current research interests include conservation biological control as it pertains to ornamental insect pests and studying the biology, ecology and management of the recently introduced brown marmorated stink bug, Halyomorpha halys (Ståhl).

Research Projects

  • Implementation of alternative methods to control insect pests
  • Influence of flowering plants on the retention of natural enemies
  • Assessment of the pesticides used by agriculture in New Jersey
  • Ecology and management of Halyomorpha halys

Recent Publications (Last 5 years, * denotes student)

  1. Abrams, P.K., K.A. Hoelmer, A. Acebes-Doria, H. Andrews, E.H. Beers, J.C. Bergh, R. Bessin, D. Biddinger, P. Botch, M.L. Buffington, M.L. Cornelius, E. Costi, E.S. Delfosse, C. Dieckhoff, R. Dobson, Z. Donais, M. Grieshop, G. Hamilton, T. Haye, C. Hedstrom, M.V. Herlihy, M.S. Hoddle, C.R.R. Hooks, P. Jentsch, N.K. Joshi, T.P. Kuhar, J. Lara, J.C. Lee, A. Legrand, T.C. Leskey, D. Lowenstein, L. Maistrello, C.R. Mathews, J.M. Milnes, W.R. Morrison, A.L. Nielsen, E.C. Ogburn, C.H. Pickett, K. Poley, J. Pote, J. Radl, P.M. Shrewsbury, E. Talamas, L. Tavella, J.F. Walgenbach, R. Waterworth, D.C. Weber, C. Welty, and N.G. Wiman. Accepted. Indigenous arthropod natural enemies of the invasive brown marmorated stink bug in North America and Europe.  Journal of Pest Science.
  2. Cambridge*, J.E, L. Francouer*, and G.C. Hamilton. Accepted. Brown Marmorated Stink Bug (Hemiptera: Pentatomidae) Attraction to Different Light Stimuli. Florida Entomologist.
  3. Nielsen, A., S. Fleischer, G. Hamilton, T. Hancock, G. Krawczyk, J. Lee, E. Ogburn, J. Pote, A. Raudenbush, Amy, A. Rucker, M. Saunders, V. Skillman, J. Sullivan, J. Timer, J. Walgenbach, N. Wiman, and T. Leskey. 2017. Phenology of the Brown Marmorated Stink Bug Described Using Female Reproductive Development. Ecology and Evolution. Doi: 10.1002/ece3.3125
  4. Weidner*, L., J. Tomberlin, D. Gemmellaro* and G.C. Hamilton. 2017. Evaluation of bait traps as a means to predict initial blow fly (Diptera: Calliphoridae) communities associated with decomposing swine remains in New Jersey, USA. Forensic Science International.
  5. Hahn*, N.G., M.C. Hwang, and G.C. Hamilton. 2017. Circuitry and coding used in a flight mill system for the study of flight performance of Halyomorpha halys. Florida Entomologist 100: 195-198.
  6. Hahn*, N.G., C. Rodriguez-Saona and G.C. Hamilton. 2017. Characterizing the Spatial Distribution of Brown Marmorated Stink Bug, Halyomorpha halys Stål (Hemiptera: Pentatomidae), Populations in Peach Orchards. PloS ONE.
  7. Maslo, B., R. Valentin, K. Leu, K. Kerwin, G.C. Hamilton, A. Bevan, N.F. Fefferman and D.M. Fonseca. 2017. Chirosurveillance: The use of native bats to detect invasive agricultural pests. PloS ONE 12:1-10. e0173321
  8. Rodriguez-Mozo*, L., S. McKamey, J.L. Ware and G. Hamilton. 2017. Two new species of Darnini (Hemiptera: Membracidae) from Colombia and Peru. ZooTaxa 4281: 108-114.
  9. Fraga*, D.F., J. Parker, A.C. Busoli, G.C. Hamilton, A.L. Nielsen, and C. Rodriguez-Saona. 2016. Behavioral responses of the predaceous minute pirate bug (Hemiptera: Anthocoridae) to tridecane, a volatile emitted by the brown marmorated stink bug. Journal of Pest Science. 12 pp. DOI 10.1007/s10340-016-0825-9
  10. Rosen*, S., J. Cambridge* and G.C. Hamilton. 2016. Regular Rearing Protocol and Density Trials of the Brown Marmorated Stink Bug (Hemiptera: Pentatomidae) in a Laboratory Setting. Florida Entomologist 99: 808-810.
  11. Hahn*, N.G., A.J. Kaufman, C. Rodriguez-Saona, A.L. Nielsen, J. LaForest and G.C. Hamilton. 2016. Exploring the spread of brown marmorated stink bug in New Jersey through the use of crowdsourced reports. American Entomologist 62:36-45.
  12. Philips, C.R., T.P. Kuhar, G.P. Dively, G. Hamilton, J. Whalen, and K. Kamminga, 2016. Seasonal abundance and phenology of the brown marmorated stink bug, Halyomorpha halys (Stål) on different pepper cultivars in the mid-Atlantic (US). Journal of Economic Entomology 9 pp. doi: 10.1093/jee/tow256.
  13. Weidner*, L.M., M. Monzon and G.C. Hamilton. 2016. Death eaters respond to the dark mark of decomposition by day and night: observations of initial insect activity on pig carcasses. International Journal of Legal Medicine. DOI 10.1007/s00414-016-1371-y
  14. Cambridge* J., A. Payenski* and G.C. Hamilton. 2015. The Distribution of Overwintering Brown Marmorated Stink Bugs (Hemiptera: Pentatomidae) in College Dormitories. Florida Entomologist, 98: 1257-1259.
  15. Weidner*, L.M., D.E. Jennings, J.K. Tomberlin, and G.C. Hamilton. 2015. Seasonal and Geographic Variation in Biodiversity of Forensically Important Blow Flies (Diptera: Calliphoridae) in New Jersey, USA. J. Medical Entomology 52: 1-10. DOI: 10.1093/jme/tjv104.
  16. Leskey, T.C.,  J.A. Agnello, C. Bergh, G.P. Dively, G.C. Hamilton, P. Jentsch, A. Khrimian, G. Krawczyk, T.P. Kuhar, D-H. Lee, W.R. Morrison III, D.F. Polk, C.Rodriguez-Saona, P.W. Shearer, B.D. Short, P.M. Shrewsbury, J.F. Walgenbach, C. Welty, J. Whalen, D.C. Weber and N. Wiman. 2015. Attraction of the invasive Halyomorpha halys Stål (Hemiptera: Pentatomidae) to traps baited with pheromonal and kairomonal stimuli across the United States. Economic Entomology: 1-11. DOI: 10.1093/ee/nvv049
  17. Bartlett-Healy, K., G.C. Hamilton, T. Crepeau, S. Healy, I. Unlu, A. Farajollahi,  and D. Fonseca. 2014. Integrating the Public in Mosquito Management: Active Education by Community Peers Can Lead to Significant Reduction in Peridomestic Container Mosquito Habitats. PLoS ONE E 9(9): e108504. doi:10.1371/journal.pone.0108504
  18. CABI, 2014. Halyomorpha halys (brown marmorated stink bug [original text by Leskey TC, GC Hamilton, D Biddinger, ML Buffington, C Dieckhoff, GP Dively, H Fraser, T Gariepy, C Hedstrom, DA Herbert, KA Hoelmer, CRR Hooks, D Inkley, G Krawczyk, TP Kuhar, DH Lee, AL Nielsen, DG Pfeiffer, C Rodriguez-Saona, PW. Shearer, E Talamas, E Tomasino, J Tooker, PD Venugopal, J Whalen, V Walton, N Wiman] In: Invasive Species Compendium. Wallingford, UK: CAB International.
  19. Rice, K.B., C.J. Bergh, E.J. Bergmann, D.J. Biddinger, C. Dieckhoff, G. Dively, H. Fraser, T. Gariepy, G. Hamilton, T. Haye, A. Herbert, K. Hoelmer, C.R. Hooks, A. Jones, G. Krawczyk, T. Kuhar, H. Martinson, W. Mitchell, A.L. Nielsen, D.G. Pfeiffer, M.J. Raupp, C. Rodriguez-Saona, P. Shearer, P. Shrewsbury, P.D. Venugopal, J. Whalen, N.G. Wiman, T.C. Leskey, and J.F. Tooker. 2014. Biology, Ecology, and Management of Brown Marmorated Stink Bug (Hemiptera: Pentatomidae). J. Integ. Pest Mngmt. 5(3): 1-13; DOI:
  20. Wallner AM, Hamilton GC, Nielsen AL, Hahn* N, Green EJ, Roriguez-Saona C. 2014. Landscape Factors Facilitating the Invasive Dynamics and Distribution of the Brown Marmorated Stink Bug, Halyomorpha halys (Hemiptera: Pentatomidae), after Arrival in the United States. PLoS ONE 9(5): e95691. doi:10.1371/journal.pone.0095691.
  21. Weidner*, L.M., J.K. Tomberlin and G.C. Hamilton. 2014. Development of  Lucilia coeruleivirdis (Diptera: Calliphoridae in New Jersey, USA. Florida Entomologist 97: 849-851.
  22. Williams GM, Faraji A, Unlu I, Healy SP, Farooq M, R. Gaugler,  G. Hamilton, and D.M. Fonseca. 2014. Area-Wide Ground Applications of Bacillus thuringiensis var. israelensis for the Control of Aedes albopictus in Residential Neighborhoods: From Optimization to Operation. PLoS ONE 9(10): e110035. doi:10.1371/journal.pone.0110035
  23. Fonseca, D., I. Unlu, T. Crepeau, A. Farajollahi, S. Healy, K. Bartlett-Healy*, D. Strickman, R. Gaugler, G. Hamilton, D. Kline and G.G. Clark. 2013. Area-wide management of Aedes albopictus: II. Gauging the efficacy of traditional integrated pest control measures against urban container mosquitoes. Pest Management Science 69:1351-1361.
  24. Nielsen, A.L, K. Holmstrom, G.C. Hamilton, J. Cambridge and J. Ingerson-Mahar.  2013. Use of black light traps to monitor the abundance and spread of the brown marmorated stink bug.  Journal of Economic Entomology 106(3): 1495-1502.
  25. Xu, J., D.M. Fonseca, G.C. Hamilton, K.A. Hoelmer, and A.L. Nielsen. 2013. Tracing the origin of US brown marmorated stink bugs, Halyomorpha halys. Biological Invasions. DOI 10.1007/s10530-013-0510-3
  26. Bickerton*, M. and G.C. Hamilton. 2012. Effects of intercropping with flowering plants on predation of Ostrinia nubilalis (Lepidoptera: Crambidae) eggs by generalist predators in bell peppers. Environmental Entomology 41: 612-620.
  27. Kuhar, T. P., Kamminga, K. L., Whalen, J., Dively, G. P., Brust, G., Hooks, C. R. R., Hamilton, G., and Herbert, D. A. 2012. The pest potential of brown marmorated stink bug on vegetable crops. Online. Plant Health Progress doi: 10.1094/PHP-2012-0523-01-BR.
  28. Leskey, T.C., G.C. Hamilton, A.L. Nielsen, D.F.Polk, C.Rodriguez-Saona, J.C. Bergh, D.A. Herbert, T.P. Kuhar, D.P., G.P. Dively, R.R.C. Hooks, M.J. Raupp, P.M. Shrewsbury, G. Krawczyk, P.W. Shearer, J. Whalen, C. Koplinka-Loehr, E. Myers, D. Inkley, K.A. Hoelmer, D. Lee, and S.E. Wright. 2012.  Pest Status of the Brown Marmorated Stink Bug in the USA. Outlooks on Pest Management 23: 218-226.

Recent Awards (Last 5 years)

CV (254k PDF)