College of Natural & Agricultural Sciences



Thomas Perring

Thomas Perring

Professor of Entomology

BS Wildlife Ecology 1978

Oklahoma State University

MS Entomology 1980

Texas Tech University

PhD Entomology 1983

University of Nebraska

Research Areas

Biology, ecology, and control of agriculturally-important arthropods. Integrated pest management. Epidemiology of arthropod-vectored plant pathogens.

Contact Information
Entomology Bldg. 225
(951) 827-4562

My research group conducts basic and applied research aimed at developing environmentally and economically sustainable Integrated Pest Management programs.  Currently the lab is studying the biology, ecology, and management of the carob moth, a key pest of ripening date fruit.  This research is centered on elucidating the seasonal life cycle of moths on dates, the impact of currently used pesticides, the natural enemy complex that exists in the date garden, and mating disruption with a pheromone mimic.  We also are studying the management of the date mite using biological and chemical control methods integrated with new sampling strategies.  Additionally we are conducting research on the newly introduced Bagrada bug, which is causing devastating losses to vegetable growers in the desert regions of southern California and Arizona.  We have studied the host range of this pest and are beginning to look at the seasonal biology and temperature-related developmental rate.  Finally, we continue studies on the epidemiology of arthropod-borne plant pathogens and are studying sharpshooter-vectored Xylella fastidiosa, the causal agent of Pierce’s disease of grapevines.

Awards Received

2006 – Innovative Teaching Award,UCR

2002 – Distinguished Teaching Award, Pacific Branch of the Entomological Society of America 
1992 - 1993 - President, UCR Chapter of Gamma Sigma Delta 
1992 – Featured Lecturer, UCR Chapter of Sigma Xi


Have published 119 refereed publications and book chapters

Daugherty, M.P., Rashed, A., Almeida, R., Perring, T.M. 2011. Vector preference for hosts differing in infection status: sharpshooter movement and Xyllela fastidiosa transmission. Ecological Entomology.  36: 654-662.

Park, Y.L., Perring, T.M., Krell, R.K., Hashim-Buckey, J.M., Hill, B. 2011. Spatial distribution of Pierce’s disease related to incidence, vineyard characteristics and surrounding land use. Journal of Enology and Viticulture.  62: 229-238. 

Walker, G.P., Perring, T., Freeman, T.P. 2010. Life History, Functional Anatomy, Feeding and Mating Behavior.  P. 109-160 in Bemisia: Bionomics and management of a global pest.    P.A. Stansly and S.E. Naranjo (eds). Springer Science, New York.

Puthoff, D.P., Holzer, F.M., Perring, T.M., Walling, L. 2010.  Tomato pathogenesis-related protein genes are expressed in response to Trialeurodes vaporariorum and Bemisia tabacibiotype B feeding. J. Chem. Ecol. 36: 1271-1285.

Park, J.J., Perring, T. 2010. Development of a binomial sampling plan for carob moth (Lepidoptera: Pyralidae), a pest of California dates. J. Econ. Entomol. 103: 474-1482

Nay, J.E. and T.M. Perring. 2008. Influence of Host Plant Stages on Carob Moth (Lepidoptera: Pyralidae) Development and Fitness. Environmental Entomol. 37: 568-574. 

Symmes, E.J., G.P. Walker, and T.M. Perring. 2008. Stylet penetration behaviors of Myzus persicae related to transmission of zucchini yellow mosaic virus. Entomol. Exp. Appl. 129: 258-267. 

Krell, R.K., E.A. Boyd, J.E. Nay, Y.L. Park and T.M. Perring. 2007. Mechanical and insect transmission of Xylella fastidiosa to Vitis vinifera. Am. J. Enology and Viticulture. 58: 211-216. 

Nay, J.E., Y.L. Park, and T.M. Perring. 2007. Effect of bunch sanitation on spatial distributions of abscised fruit and phycitine moths (Lepidoptera: Pyralidae) in California date gardens. J. Econ. Entomol. 100: 1773-1780. 

Symmes, E.J. and T.M. Perring. 2007. Intraspecific variation in zucchini yellow mosaic virus transmission by Myzus persicae (Sulzer) and the impact of aphid host plant. J. Econ. Entomol. 100: 1764-1772. 

Krell, R.K., T.M. Perring, C.A. Farrar, Y.L. Park and C. Gispert. 2006. Intraplant Sampling of Grapevines for Pierce's Disease Diagnosis. Plant Disease. 90: 351-357. 

Park, Y.L., T.M. Perring, C.A. Farrar and C. Gispert. 2006. Spatial and Temporal Distributions of Two Sympatric Homalodisca spp. (Hemiptera: Cicadellidae): Implications for Areawide Pest Management. Agric. Ecosyst. Environ. 113: 168-174. 

Park, Y.L., T.M. Perring, R. Yacoub, D.W. Bartels, and D. Elms. 2006. Spatial and temporal dynamics of overwintering Homalodisca coagulata (Hemiptera: Cicadellidae). J. Econ. Entomol. 99: 1936-1942. 

Park, Y.L., T.M. Perring, R.K. Krell, C.A. Farrar, and C. Gispert. 2006. Spatial Distribution of Pierce’s Disease in the Coachella Valley: Implications for Sampling. Am. J. Enol. and Viticulture. 57: 220-225. 

Perring, T.M. and E.J. Symmes. 2006. Courtship Behavior of Bemisia argentifolii(Hemiptera: Aleyrodidae) and Whitefly Mate Recognition. Ann. Entomol. Soc. Am. 99: 598-606. 

Nay, J. E., and T. M. Perring. 2006. Effect of fruit moisture content on mortality, development, and fitness of the carob moth (Lepidoptera : Pyralidae). Environ. Entomol. 35: 237-244. 

Nay, J.E. and T. M. Perring. 2005. Impact of Ant Predation and Heat on Carob Moth (Lepidoptera: Pyralidae) Mortality in California Date Gardens. J. Econ. Entomol. 98: 725-731. 

Ansaloni, T, and T.M. Perring. 2004. Biology of Aceria guerreronis (Acari: Eriophyidae) on Queen Palm Syagrus romanzoffiana (Arecaceae). Int.. J. Acarol. 30: 63-70. 

Basky, Z., T. M. Perring, and I. Tobias. 2001. Spread of Zucchini Yellow Mosaic Potyvirus in Squash in Hungary. J. Appl. Entomol. 125: 271-275. 

Gruenhagen, N. M. and T. M. Perring. 2001. Plant Influences on Silverleaf Whitefly Oviposition and Development and the Potential for Enemy-Free Space. Entom. Exp. et. Appl. 99: 387-391. 

Gruenhagen, N. M. and T. M. Perring. 2001. Impact of Leaf Trichomes on Parasitoid Behavior and Parasitism of the Silverleaf Whitefly (Homoptera: Aleyrodidae). Southwest Entomol. 26: 279-290. 

Brown, J. K., T. M. Perring, A. D. Cooper, I. D. Bedford, and P. G. Markham. 2000. Genetic Analysis of Bemisia (Homoptera: Aleyrodidae) Populations by Isoelectric Focusing Electrophoresis. Biochemical Genetics 38: 13-25. 

van de Ven W.T.G, C. S.LeVesque, T. M. Perring, and L. L. Walling. 2000. Local and Systemic Changes in Squash Gene Expression in Response to Silverleaf Whitefly Feeding. Plant Cell 12: 1409-1424. 

Gispert, C., T. M. Perring, and R. Creamer. 1998. Purification and Characterization of Peach Mosaic Virus. Plant Dis. 82: 905-908. 

Gispert, C., G. N. Oldfield, T. M. Perring, and R. Creamer. 1998. Biology of the Transmission of Peach Mosaic Virus By Eriophyes insidiosus Keifer and Wilson (Acari: Eriophyidae). Plant Dis. 82: 1371-1374. 

Gispert, C. and T. M. Perring. 1997. Rearing Eriophyes insidiosus Keifer and Wilson (Acari: Eriophyoidea), a Fastidious Bud Mite. Internat. J. Acarol. 23: 227-231. 

Perring, T. M., C. A. Farrar, M. J. Blua, H. L. Wang, and D. Gonsalves. 1995. Cross Protection of Cantaloupe with a Mild Strain of Zucchini Yellow Mosaic Virus: Effectiveness and Application. Crop Protection. 14: 601-606. 

Bellows, T. S., Jr., T. M. Perring, R. J. Gill, and D. H. Headrick. 1994. Description of a Species of Bemisia (Homoptera: Aleyrodidae). Ann. Entomol. Soc. Am. 87: 195-206. 

Blua, M. J., T. M. Perring, and M. A. Madore. 1994. Plant Virus-Induced Changes in Aphid Population Development and Temporal Fluctuations in Plant Nutrients. J. Chem. Ecol. 20: 691-707. 

Perring, T. M., A. D. Cooper, R. J. Rodriguez, C. A. Farrar, and T. S. Bellows, Jr. 1993. Identification of a Whitefly Species by Genomic and Behavioral Studies. Science 259: 74-77.

Fereres, A., M. J. Blua, and T. M. Perring. 1992. Retention and Trans¬mission Characteristics of Zucchini Yellow Mosaic Virus by Aphis gossypii and Myzus persicae(Homoptera: Aphididae). J. Econ. Entomol. 85: 759-765. 

Castle, S. J., T. M. Perring, C. A. Farrar, and A. N. Kishaba. 1992. Field and Laboratory Transmission of Watermelon Mosaic Virus 2 and Zucchini Yellow Mosaic Virus by Various Aphid Species. Phytopathology 82: 235-240. 

Blua, M. J. and T. M. Perring. 1992. Effects of Zucchini Yellow Mosaic Virus on Colonization and Feeding Behavior of Aphis gossypii (Homoptera: Aphididae) alatae. Environ. Entomol. 21: 578-585. 

Blua, M. J. and T. M. Perring. 1992. Alatae Production and Population Increase of Aphid Vectors on Virus-Infected Host Plants. Oecologia 92: 65-70. 

Polston, J. E., P. Bubrick, and T. M. Perring. 1991. Detection of Plant Virus Coat Proteins on Whole Leaf Blots. Analytical Biochem. 196: 267-270. 

Perring, T. M. and L. J. Lackey. 1989. Temperature and Humidity Effects on Mortality and Pre-Adult Development of Two Phytoseiulus persimilis Strains (Acari: Phytoseiidae). Int. J. Acarol. 15: 47-52. 

Royalty, R. N. and T. M. Perring. 1989. Reduction in Photosynthesis of Tomato Leaflets Caused by Tomato Russet Mite (Acari: Eriophyidae). Environ. Entomol. 18: 256-260.

Let us help you with your search