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Thomas Patrick Kuhar


Ph.D., M.S., B.S.


B.S. (1992), Towson University 

M.S. (1996), Virginia Tech 

Ph.D. (2000), Virginia Tech

Professional Memberships

  • Associate editor for Focus on tomato - Plant Management Network
  • Associate editor for Journal of Integrated Pest Management
  • Ecological Society of America
  • Entomological Society of America
  • Plant Management Network

I am the vegetable entomology specialist at Virginia Tech. I have a 75% Research: 25% Extension appointment in the Department of Entomology. I also have a close affiliation with the Virginia Tech Eastern Shore Agricultural Research and Extension Center in Painter, VA. I investigate the biology and control of arthropod pests and use this knowledge to develop and deliver useful pest management information to agricultural clientele and the scientific community. The overall goal of my program is to develop, evaluate, and help implement sound integrated pest management practices on vegetable crops, which can enhance the profitability and sustainability of vegetable production in Virginia, as well as improve food and environmental quality by minimizing the use of toxic pesticides.

Currently I have ongoing research projects in the following areas: 1) brown marmorated stink bug biology, ecology, and pest management strategies in vegetable crops (John Aigner M.S. student; Holly Wantuch); 2) Colorado potato beetle insecticide resistance management (Adam Wimer Ph.D. graduate); 3) effect of buckwheat companion plantings on biological control of pests in collards (Chris Philips Ph.D. student); 4) ecology and IPM of Mexican bean beetle on snapbeans; 5) evaluating novel pest management strategies for pumpkin production; wireworm control in potatoes; 6) organic control of squash bug (Helene Doughty M.S. student); and 7) evaluation of novel insecticides for control of lepidopteran pests, stink bugs, thrips, aphids, beetles, maggots, and spider mites on potatoes, tomatoes, peppers, sweet corn, eggplant, snap bean, cole crops, and cucurbits.





  • Aigner, Jr. John D
  • Phillips, Christopher
  • Nottingham, Louis
  • Wimer, Adam
  • Wilson, James
  • Wantuch, Holly
  • Gyawaly, Sudan

Wage or Other Employees

  • Aigner, Benjamin
  • Jenrette, James
  • Lohr, Ashley
  • Fread, Elizabeth
  • Hogue, James
  • Philips, Rebecca

Recent Publications (since 2008):

Kuhar, T. P., E. M. Hitchner, R. R. Youngman, K. Mori, and J. C. Dickens.  2012. Field response of Colorado potato beetle to enantiomeric blends of CPB I aggregation pheromone.  Agric. Sci. 3(7): 896-899. doi:10.4236/as.2012.37108

Kuhar, T., K. Kamminga*, J.  Whalen, G. P. Dively, G. Brust, C. R.R. Hooks, G. Hamilton, and D. A. Herbert.  2012.  The pest potential of brown marmorated stink bug on vegetable crops. Online. Plant Health Progress doi:10.1094/PHP-2012-0523-01-BR.

Hitchner, E.*, T. P. Kuhar, G. P. Dively, R. R. Youngman, C. R. Philips*, and T. D. Anderson.  2012.  Baseline susceptibility and field efficacy of metaflumizone on Colorado potato beetle, Leptinotarsa decemlineata (Coleoptera: Chrysomelidae). J. Econ. Entomol. 105: 207-213.

Jordan, T. A. *, R. R. Youngman, C. L. Laub, S. Tiwari, T. P. Kuhar, T. K. Balderson, D. M. Moore, and M. Saphire.  2012.  Fall soil sampling method for predicting spring infestation of white grubs (Coleoptera: Scarabaeidae) in corn and the benefits of clothianidin seed treatment in Virginia. Crop Protection 39: 57-62.

Wright, M. G., T. P. Kuhar, M. P. Hoffmann, S. A. Pitcher, and J. Gardner.  2012.  Dispersal of Trichogramma ostriniae in field corn.  Biocontrol Science and Technology.  DOI: 10.1080/09583157.2012.723676

Herlihy, M. V., R. G. Van Driesche, M. R. Abney, J. Brodeur, A. B. Bryant, R. A. Casagrande, D. A. Delaney, T. E. Elkner, S. J. Fleischer, R. L. Groves, D. S. Gruner, J. P. Harmon, G. E. Heimpel, K. Hemady, T. P. Kuhar, C. M., Maund, A. M. Shelton, A. J. Seaman, M. Skinner, R. Weinzierl, K. V. Yeargan and Z. Szendrei.  2012.  Distribution of Cotesia rubecula (Hymenoptera: Braconidae) and its displacement of Cotesia glomerata in eastern North America. Florida Entomologist 95:461-467.

Leskey, T. C., G. C. Hamilton, A. L. Nielsen, D. Polk, C. Rodriguez-Saona, J. C. Bergh, D. A. Herbert, T. Kuhar, D. Pfeiffer, G. Dively, C. Hooks, M. Raupp, P. Shrewsbury, G. Krawczyk, P. W. Shearer, J. Whalen, C. Koplinka-Loehr, E. Myers, D. Inkley, K. Hoelmer, D-H. Lee, and S. E. Wright.  2012.  Pest status of the brown marmorated stink bug, Halyomorpha halys (Stål) in the USA.  Outlooks on Pest Management 23: 218-226.

Wallingford, A. K.*, T. P. Kuhar, and P. B. Schultz.  2012. Toxicity and field efficacy of four neonicotinoids on harlequin bug (Hemiptera: Pentatomidae).  Florida Entomologist. 95: 1123-1126.

Philips, C. R. *, D. A. Herbert, T. P. Kuhar, D. D. Reisig, and E. A. Roberts.  2012.  Using degree-days to predict cereal leaf beetle (Oulema melanopus) (Coleoptera: Chrysomelidae) egg and larval population peaks.  Environ. Entomol. 41: 761-767.

Ghidiu, G., T. Kuhar, J. Palumbo, and D. Schuster. 2012. Drip chemigation of insecticides as a pest management tool in vegetable production.  Journal of Integrated Pest Management, 3(3); 2012, E1-E5(5). DOI:

Kamminga, K. L.*, A. L. Koppel*, D. A. Herbert, Jr., and T. P. Kuhar. 2012. Biology and management of the green stink bug.  J. Integrated Pest Management: 3(3); 2012; C1-C8(8). DOI:

Kamminga*, K., T. Kuhar, A. Wimer* and D. A. Herbert. 2012. Effects of the insect growth regulators novaluron and diflubenzuron on the brown marmorated stink bug. Online. Plant Health Progress doi:10.1094/PHP-2012-1212-01-RS.

Reisig, D., J. Bacheler, D. Herbert, T. Kuhar, S. Malone, C. Philips*, and R. Weisz.  2012.  Efficacy and value of prophylactic vs. integrated pest management approaches for management of cereal leaf beetle (Coleoptera: Chrysomelidae) in wheat and ramifications for adoption by growers. J. Econ. Entomol. 105(5): 1612-1619.

Wallingford, A.*, T. Kuhar, D. Pfeiffer, D. Tholl, J. Freeman, H. Doughty, and P. Schultz.   2013.  Host plant preference of harlequin bug (Hemiptera: Pentatomidae), and evaluation of a trap cropping strategy for its control in collard. J. Econ. Entomol. (in press).

Koppel, A.*, D. Herbert, T. Kuhar, S. Malone, and G. Arrington.  2011.  Efficacy of selected insecticides against eggs of Euschistus servus (Say) and Acrosternum hilare (Say) (Hemiptera: Pentatomidae) and the egg parasitoid, Telenomus podisi Ashmead (Hymenoptera: Scelionidae. J. Econ. Entomol. 104: 137-142.

Wallingford, A. K.*, T. P. Kuhar, P. B. Schultz, and J. H. Freeman.  2011.  Harlequin bug biology and pest management in Brassicaceous crops.  J. Integ. Pest Mngmt. 2(1): 2011; DOI: 10.1603/IPM1001.

Philips, C.*, D. Herbert, T. Kuhar, D. Reisig, W. Thomason, and S. Malone.  2011.  Fifty years of cereal leaf beetle in the U.S.: An update on its biology, management, and current research. J. Integ. Pest Mngmt. 2(2).


Kuhar, T., G. Ghidiu, and H. B. Doughty.  2010.  Decline of European corn borer as a pest of potatoes.  Online. Plant Health Progress doi:10.1094/PHP-2010-0129-01-PS.


Kuhar, T., Walgenbach, J. F., and H. B. Doughty.  2010.  Control of Helicoverpa zea in tomatoes with chlorantraniliprole applied through drip chemigation. Online. Plant Health Progress doi:10.1094/PHP-2009-0407-01-RS.


Kamminga, K., D. Herbert, T. Kuhar, S. Malone, and A. Koppel*.  2009.  Efficacy of insecticides against Acrosternum hilare and Euschistus servus (Hemiptera: Pentatomidae) in Virginia and North Carolina. J. Entomol. Sci. 44: 1-10.


Koppel, A.*, D. Herbert, T. Kuhar, and K. Kamminga*.  2009.  Survey of stink bug (Heteroptera: Pentatomidae) egg parasitoids in wheat, soybean and vegetable crops in southeast Virginia. Environ. Entomol. 38: 375-379.


Chapman, A.*, T. Kuhar, P. Schultz, and C. Brewster. 2009. Dispersal of Trichogramma ostriniae (Hymenoptera: Trichogrammatidae) in potato fields. Environ. Entomol. 38: 677-685.


Chapman, A.*, T. Kuhar, P. Schultz, T. Leslie, S. Fleischer, G. Dively, and J. Whalen.  2009. Integrating chemical and biological control of European corn borer in bell pepper. J. Econ. Entomol. 102 (1): 287-295.


Kamminga, K., D. Herbert, T. Kuhar, S. Malone, and H. Doughty.  2009.  Toxicity, feeding preference and repellency associated with selected organic insecticides against Acrosternum hilare and Euschistus servus (Hemiptera: Pentatomidae. J. Econ. Entomol. 102: 1915-1921.


Kamminga, K., D. Herbert, T. Kuhar, and C. Brewster.  2009.  Predicting black light trap catch and flight activity of Acrosternum hilare (Hemiptera: Pentatomidae) adults. Environ. Entomol. 38: 1716-1723.


Herbert, D., S. Malone, T. Kuhar, H. Portillo, J. Saienni, and R. Williams.  2008.  Adult corn

earworm (Helicoverpa zea) susceptibility to methomyl. Plant Health Progress doi: 10.1049/PHP-2008-0312-01-RS.


Schultz, P., and T. Kuhar.  2008.  First record of pepper weevil infestation in Virginia. Online.

Plant Health Progress doi:10.1094/PHP-2008-0118-01-BR.

    Kuhar, Thomas P

  • 540-231-6129
  • 540-231-6129 (Office)
  • Department of Entomology (MC 0319), Virginia Tech
    170 Drillfield Drive
    Blacksburg, Virginia 24061
    United States