Paula M. Shrewsbury, Ph.D.
Professor and Extension Specialist
Office Phone: 301.405.7664
Office Address: University of Maryland * Department of Entomology * 4112 Plant Sciences Building * College Park, MD 20742
Insect Pests of Ornamentals and Turfgrass (BSci 497) – This course covers the recognition, biology, ecology and management of insects and mites injurious to ornamental trees, shrubs, greenhouse crops, and turf. Emphasis is on Integrated Pest Management (IPM) and ecologically based management strategies. An insect and plant damage collection is required. (Lecture and lab, 4 credits, taught fall semester of odd numbered years)
Topic Seminars in Entomology (BSci 798, 1 credit) – The Topic Seminars focus on topics related to sustainable pest management and extension and outreach education.
Study Abroad Courses (Winter and Summer terms) – I co-teach / lead study abroad courses to Belize and Australia through the UMD College Park Scholars Program. The focus of these courses is on the culture and the biology and ecology of these locations.
Graduate Program Affiliations
- BISI - BISI-Behavior, Ecology, Evolution, & Systematics (BEES)
As a researcher and Extension Specialist, my research and educational activities blend seamlessly together to provide a Research and Extension Program that meets the needs of my stakeholder groups, citizens, and graduate and undergraduate students, thereby contributing to the land grant mission of the University of Maryland. Knowledge generated by my research and on-farm demonstration programs (research conducted by me with stakeholders on their farms) provides pest management information useful in training and informing members of my stakeholder groups that include the nursery, landscape, and turf management industries, foresters, extension educators and adult volunteers such as Master Gardeners and Master Naturalists, members of government agencies, and citizens. I also use this information in STEM outreach activities for youth, and graduate and undergraduate education. Program activities include: applied ecological studies of plant – herbivore – natural enemy interactions to elucidate innovative pest management options for invasive and native insects; development of sustainable pest management practices that reduce reliance on chemical pesticides and integrate biological control and the conservation of natural enemies and pollinators; implementation of on-farm demonstration programs to further the adoption of IPM; training professionals in stakeholder groups; development of educational materials to facilitate training; development of resources to help stakeholders implement IPM programs, and providing service to stakeholder groups. The overall goals of my program are to develop sustainable ornamental and turfgrass systems that prevent or diminish pest outbreaks and mitigate impacts on the environment, and are economical for stakeholders; to increase the adoption of IPM practices by providing exceptional educational outreach programs; and to provide unique opportunities for undergraduate and graduate education in the discipline of IPM and landscape community ecology.
- Yong-Lak Park, Kyungsan Choi1, John Cullum, Kim A. Hoelmer, Donald C. Weber, William R. Morrison III, Kevin B. Rice, Greg Krawczyk, Shelby J. Fleischer, George Hamilton, Dalton Ludwick, Anne L. Nielsen, Joseph Kaser, Dean Polk, Paula M. Shrewsbury, J. Christopher Bergh, Thomas P. Kuhar, and Tracy C. Leskey, (Subm 2/2023). Landscape-Scale Spatiotemporal Dynamics of Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) Populations: Implications for Spatially-Based Pest Management. (Pest Management Science).
- Rafael B. de Andrade, Kristopher Abell, Jian J. Duan, Paula M. Shrewsbury, and Daniel S. Gruner. 2020. Protective neighboring effect from ash trees treated with systemic insecticide against emerald ash borer. Pest Management Science. 77: 474-481. doi.org/10.1002/ps.6041
- John P. Cullum, Laura J. Nixon, William R. Morrison, Michael J. Raupp, Paula M. Shrewsbury, P. Dilip Venugopal, Holly Martinson, J. Christopher Bergh, and Tracy C. Leskey. 2020. Influence of landscape factors and abiotic conditions on dispersal behavior and overwintering site selection by Halyomorpha halys (Hemiptera: Pentatomidae). Journal of Economic Entomology. 113(4): 2016-2021. doi: 10.1093/jee/toaa077
- Dalton Ludwick, William R. Morrison, III, Angelita L. Acebes-Doria, Arthur M. Agnello, J. Christopher Bergh, Matthew L. Buffington, George C. Hamilton, Jayson K. Harper, Kim A. Hoelmer, Gregory Krawczyk, Thomas P. Kuhar, Douglas G. Pfeiffer, Anne L. Nielsen, Kevin B. Rice, Cesar Rodriguez-Saona, Peter W. Shearer, Paula M. Shrewsbury, Elijah J. Talamas, James F. Walgenbach, Nik G. Wiman, and Tracy C. Leskey. 2020. Invasion of the Brown Marmorated Stink Bug (Hemiptera: Pentatomidae) into the United States: Developing a National Response to an Invasive Species Crisis Through Collaborative Research and Outreach Efforts. Journal of Integrated Pest Management, 11(1): 4; 1–16. doi: 10.1093/jipm/pmaa001
- Abell, K.J.**, Duan, J.J., and Shrewsbury, P.M.◊ 2020. Determining optimal parasitoid release timing for the biological control of emerald ash borer (Coleoptera: Buprestidae). Florida Entomologist. 102(4): 691-694. https://doi.org/10.1653/024.102.0403
- Giuseppino Sabbatini Peverieri, Mircea-Dan Mitroiu, Marie-Claude Bon, Rammohan Balusu, Luca Benvenuto, Iris Bernardinelli, Henry Fadamiro, Martina Falagiarda, Lucian Fusu, Emily Grove, Tim Haye, Kim Hoelmer, Emily Lemke, Giorgio Malossini, Leonardo Marianelli, Matthew R. Moore, Alberto Pozzebon, Pio-Federico Roversi, Davide Scaccini, Paula Shrewsbury, Glynn Tillman, Paola Tirello, Rebeccah Waterworth**, Elijah J. Talamas. 2019. Surveys of stink bug egg parasitism in Asia, Europe and North America, morphological taxonomy, and molecular analysis reveal the Holarctic distribution of Acroclisoides sinicus (Huang & Liao) (Hymenoptera, Pteromalidae). Journal of Hymenoptera Research. 74: 123-151. doi: 10.3897/jhr.74.46701, http://jhr.pensoft.net
- Jennings, D.E.**, J.J. Duan, P.M. Shrewsbury◊. 2018. Comparing Methods for Monitoring Establishment of the Emerald Ash Borer (Agrilus planipennis, Coleoptera: Buprestidae) Egg Parasitoid Oobius agrili (Hymenoptera: Encyrtidae) in Maryland, USA. Forests, Special Issue Impacts, Monitoring and Management of Forest Pests and Diseases. doi: 10.3390/f9100659
- Hoban, J.N.*, J.J. Duan, P.M. Shrewsbury◊. 2018. Host utilization and fitness of the larval parasitoid Tetrastichus planipennisi are influenced by emerald ash borer’s food plants: implications for biological control. Biological Control. 127: 85-93. https://doi.org/10.1016/j.biocontrol.2018.09.001
- Rice, K.B., R.J. Bedoukian, G.C. Hamilton, P. Jentsch, A. Khrimian, P. MacLean, W.R. Morrison III, B.D. Short, P.M. Shrewsbury, D.C. Weber, N. Wiman, and T. C. Leskey. (2018). Enhanced Response of Halyomorpha halys (Hemiptera: Pentatomidae) to its Aggregation pheromone with Ethyl Decatrienoate. Journal of Economic Entomology, 111 (1): 495-499. doi: 10.1093/jee/tox316 (PDF)
- Wetherington, M.T., D.E. Jennings**, P.M. Shrewsbury, and J.J. Duan. 2017. Climate variation alters the synchrony of host-parasitoid interactions. Ecology and Evolution. doi: 10.1002/ece3.3384
- Jones A.L.*, D.E. Jennings**, C.R.R. Hooks, P.M. Shrewsbury. 2017. Field surveys of egg mortality and indigenous egg parasitoids of the brown marmorated stink bug, Halyomorpha halys, in ornamental nurseries in the mid-Atlantic region of the USA. Journal of Pest Science, Special Issue on Brown Marmorated Stink Bug. doi: 10.1007/s10340-017-0890-8
- P.K. Abram, K.A. Hoelmer… P.M. Shrewsbury, R.A. Waterworth**,… (49 authors). 2017. Indigenous arthropod natural enemies of the invasive brown marmorated stink bug in North America and Europe. J. Pest Sci. doi: 10.1007/s10340-017-0891-7 (PDF)
- Jennings D.E.,** J.J. Duan, D. Bean, K.A. Rice, G.L. Williams, S.K. Bell, A.S. Shurtleff, and P.M. Shrewsbury. 2017. Effects of the emerald ash borer invasion on the community composition of arthropods associated with ash tree boles in Maryland, U.S.A. Agricultural and Forest Entomology. doi: 10.1111/afe.12186
- Jennings D.E.,** J.J. Duan, D. Bean, J.R. Gould, K.A. Rice, and P.M. Shrewsbury. 2016. Monitoring the establishment and abundance of introduced parasitoids of emerald ash borer larvae in Maryland, U.S.A. Biological Control. 101: 138-144
- Martinson, H.M., Bergmann, E. J., P. D. Venugopal, P. M. Shrewsbury and M. J. Raupp. 2016. Invasive stink bug favors naïve plants: Testing the role of plant geographic origin in diverse, managed environments. Nature: Scientific Reports. 6:32646 | doi: 10.1038/srep32646
- Bergmann, E.J., P.D.Venugopal, H.M. Martinson, M.J. Raupp, and P.M. Shrewsbury. 2016. Host plant use by the invasive Halyomorpha halys (Stål) on woody ornamental trees and shrubs. PLoS ONE 11(2): e0149975. doi: 10.1371/journal.pone.0149975.
- Martinson, Holly M, P. Dilip Venugopal, Erik Bergmann, Paula M. Shrewsbury, Michael J. Raupp. 2015. Fruit availability influences the seasonal abundance of invasive stink bugs in ornamental tree nurseries. Journal of Pest Science, doi:10.1007/s10340-015-0677-8
- Jennings, D. E.**, J. J. Duan, and P. M. Shrewsbury. 2015. Biotic mortality factors affecting emerald ash borer (Agrilus planipennis) are highly dependent on life stage and host tree crown condition. Bulletin of Entomological Research, Bulletin of Entomological Research 105:598-606. doi:10.1017/S0007485315000498.
- Venugopal, D. P., H. M. Martinson, E. J. Bergmann, P. M. Shrewsbury, and M. J. Raupp. 2015. Edge Effects Influence the Abundance of the Invasive Halyomorpha halys (Hemiptera: Pentatomidae) in Woody Plant Nurseries. Environmental Entomology, 44(3): 474-479. DOI: 10.1093/ee/nvv061.
- Jennings, D. E.**, J. J. Duan, L.S. Bauer, J.M. Schmude, M.T. Wetherington, and P. M. Shrewsbury. 2015. Temporal dynamics of woodpecker predation on emerald ash borer (Agrilus planipennis) in the northeastern U.S.A. Agricultural and Forest Entomology, 18: 174-181. DOI: 10.1111/afe.12142
- Tracy C. Leskey, Arthur Agnello, J. Christopher Bergh, Galen P. Dively, George C. Hamilton, Peter Jentsch, Ashot Khrimian, Grzegorz Krawczyk, Thomas P. Kuhar, Doo-Hyung Lee, William R. Morrison III, Dean F. Polk, Cesar Rodriguez-Saona, Peter W. Shearer, Brent D. Short, Paula M. Shrewsbury, James F. Walgenbach, Donald C. Weber, Celeste Welty, Joanne Whalen, Nik Wiman, and Faruque Zaman. 2015. Attraction of the invasive Halyomorpha halys (Hemiptera: Pentatomidae) to traps baited with semiochemical stimuli across the United States. Environmental Entomology, 44(3): 746-756. DOI: 10.1093/ee/nvv049.
- Jones, A.L.*, D.E. Jennings**, C.R.R. Hooks, and P.M. Shrewsbury. 2014. Sentinel eggs underestimate rates of parasitism of the exotic brown marmorated stink bug, Halyomorpha halys. Biological Control, 78, 61-66. DOI: 10.1016/j.biocontrol.2014.07.011.
- Jennings, D.E**, J.J. Duan, K.M. Larson, J.P. Lelito, and P.M. Shrewsbury. 2014. Evaluating a new method for monitoring the field establishment and parasitism of Oobius agrili (Hymentoptera: Encyrtidae), an egg parasitoid of emerald ash borer (Coleoptera: Bupresstidae). Florida Entomologist, 97(3), 1263-1265.
- 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). Journal of Integrated Pest Management 5(3): 13p, DOI:
- Jennings, D.E.**, J.R. Gould, J.D. Vandenberg, J.J. Duan, and P.M. Shrewsbury. 2013 Quantifying the Impact of Woodpecker Predation on Population Dynamics of the Emerald Ash Borer (Agrilus planipennis). PLoS ONE 8(12): 9p, e83491. doi: 10.1371/journal.pone.0083491.
- Martinson, H.M., M.J. Raupp, and P.M. Shrewsbury. 2013. Invasive stink bug wounds trees, liberates sugars, and facilitates native Hymenoptera. Ann. Entomol. Soc. Am. 106(1): 47-52. DOI:
- 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. Pfeiffer, G.P. Dively, C.R. R. 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.H. Lee, and S.E. Wright. 2012. Pest Status of the Brown Marmorated Stink Bug, Halyomorpha halys in the USA. Outlooks on Pest Management, 23(5): 218-226. doi: 10.1564/23oct07. (Invited)
- Frank, S.D.*, P.M. Shrewsbury, and R.D. Denno. 2011. Plant versus prey resources: Influence on omnivore behavior and herbivore suppression. Biological Control, 57: 229-235.
- Raupp, M.J., P.M. Shrewsbury, and D.A. Herms. 2010. Ecology of herbivorous arthropods in urban landscapes. Annual Review of Entomology, 55: 19-38. (Invited, Review)
- Frank, S.D.*, P.M. Shrewsbury, R.F. Denno. 2010. Effects of alternative food on cannibalism and herbivore suppression by carabid larvae. Ecological Entomology, 35: 61-68.
- Frank, S. D.*, P. M. Shrewsbury, O. Esiekpe. 2008. Spatial and Temporal Variation in Natural Enemy Assemblages on Maryland Native Plant Species. Environmental Entomology, 37(2): 478-486.
- Frank, S. D.*, S. D. Wratten, H. Sandhu, and P. M. Shrewsbury. 2007. The influence of habitat strata on predator diversity, activity, and predation of leafrollers in a vineyard. Biological Control. 41: 230-236.
- Shrewsbury, P.M., and M.J. Raupp. 2006. Do top-down or bottom-up forces determine Stephanitis pyrioides abundance in urban landscapes? Ecological Applications, 16(1): 262-272.
- Lemke, H.D., M.J. Raupp, and P.M. Shrewsbury. 2005. Efficacy and costs associated with the manual removal of bagworms, Thyridopteryx ephemeraeformis, from Leyland cypress. Journal of Environmental Horticulture, 23(3): 123-126.
- Frank, S.D.*, and P.M. Shrewsbury. 2004. Effect of conservation strips on the abundance and distribution of natural enemies and predation of Agrotis ipsilon (Lepidoptera: Noctuidae) on golf course fairways. Environmental Entomology, 33(6): 1662-1672.
- Frank, S.D.*, and P.M. Shrewsbury. 2004. Consumption of black cutworm, Agrotis ipsilon (Lepidoptera: Noctuidae), and alternative prey by common golf course predators. Environmental Entomology, 33(6): 1681-1688.
- Shrewsbury, P.M. and M.R. Hardin. 2004. Beat sampling accuracy in estimating spruce spider mite (Acari: Tetranychidae) populations and injury on junipers. Journal of Economic Entomology, 97(4): 1444-1449.
- Shrewsbury, P.M., J.H. Lashomb, G.C. Hamilton, J. Zhang, J.M. Patt, and R.A. Casagrande. 2004. The influence of flowering plants on herbivore and natural enemy abundance in ornamental landscapes. Special Issue (ed. Geoff Gurr): Habitat Manipulation and Arthropod Pest Management, International Journal of Ecology and Environmental Sciences, 30: 23-33.
- Shrewsbury, P.M., K. Bejleri*, and J.D. Lea-Cox. 2004. Integrating cultural management practices and biological control to suppress citrus mealybug. Acta Horticulturae, 633: 425-434.
- Shrewsbury, P.M. and M.R. Hardin. 2003. Evaluation of predatory mite (Acari: Phyotseiidae) releases to suppress spruce spider mites, Oligonychus ununguis (Acari: Tetranychidae), on juniper. Journal of Economic Entomology, 96(6): 1675-1684.
- Raupp, M.J., P.M. Shrewsbury, J.J. Holmes, and J.A. Davidson. 2001. Plant species diversity and abundance affects the number of arthropod pests in residential landscapes. Journal of Arboriculture, 27: 222-229.
- Raupp, M.J., J.J. Holmes, C.S. Sadof, P.M. Shrewsbury, and J.A. Davidson. 2001. Effects of cover sprays and residual pesticides on scale insects and natural enemies in urban forests. Journal of Arboriculture, 27: 203-214.
- Gill, S., J. Lutz, P. Shrewsbury, and M. Raupp. 2001. Evaluation of biological and chemical control methods for the black vine weevil, Otiorhynchus sulcatus (F) (Coleoptera: Curculionidae) in container grown perennials. Journal of Environmental Horticulture, 19: 166-170.
- Shrewsbury, P.M. and M.J. Raupp. 2000. Evaluation of components of vegetational texture for predicting azalea lace bug, Stephanitis pyrioides (Heteroptera: Tingidae), abundance in managed landscapes. Environmental Entomology, 29(5): 919-926.
- Shrewsbury, P.M. and D.C. Smith-Fiola. 2000. Evaluation of green lacewings for suppressing azalea lace bug populations in nurseries. Journal of Environmental Horticulture, 18(4): 207-211.
- Raupp, M.J., Shrewsbury, P.M., and S. Gill. 1999. Advances in managing insect pests of urban trees. Acta Horticulturae, 496: 147 - 153.
- Leddy (Shrewsbury), P.M., T.D. Paine, and T.S. Bellows. 1995. Biology of Siphoninus phillyreae (Haliday) (Homoptera: Aleyrodidae) and its relationship to temperature. Environmental Entomology, 24: 380-386.
- Leddy (Shrewsbury), P.M., T.D. Paine, and T.S. Bellows. 1993. Ovipositional preference of Siphoninus phillyreae (Homoptera: Aleyrodidae) and its fitness on seven host plant species. Entomolgia Experimentalis et Applicata, 68: 43-50.
- Jennings D.E.**, J.J. Duan, K.J. Abell, L.S. Bauer, J.R. Gould, P.M. Shrewsbury, and R.G. Van Driesche. 2015. Life table evaluation of change in emerald ash borer populations due to biological control, pp 139-151. In: Van Driesche, R.G., and R.C. Reardon (eds.) Biology and Control of Emerald Ash Borer. USDA Forest Service: Morgantown, WV, USA
- Shrewsbury, P.M. and S.R. Leather. 2012. Using biodiversity for pest suppression in urban landscapes. In: Biodiversity and insect pests: Key issues for sustainable management. (eds. G.M. Gurr, S.D. Wratten, and W.E. Snyder). John Wiley & Sons Ltd, Chichester, UK., 350 pp. ISBN: 978-0-470-65686-0. Table of contents available at: http://au.wiley.com/WileyCDA/WileyTitle/productCd-0470656867,descCd-tableOfContents.html
- Raupp, M.J., P.M. Shrewsbury, and D.A. Herms. 2012. Disasters by Design: Outbreaks along urban gradients. In: Insect Outbreaks - Revisited. (eds. P. Barbosa, D.K. Letourneau, and A.A. Agrawal). John Wiley & Sons, Ltd, Chichester, UK., 465 pp. ISBN: 9781444337594. Table of contents available at: http://onlinelibrary.wiley.com/book/10.1002/9781118295205
- Shrewsbury, P.M. and M.J. Raupp. 2004. Biological control in specific crops: full IPM programs – Woody ornamentals. In: Biological Control of Arthropod Pests in Protected Culture. (eds. K.M. Heinz, R. Van Driesche, and M.P. Parrella), 552 pp. Ball Publishing, ISBN 1-883052-39-4
- James B. Gahan and Margaret H. Gahan Professorship in Entomology Award in recognition of contributions to the department and the field of entomology, Department of Entomology, UMD. 2021.
- Distinguished Achievement Award in Extension from the National Entomological Society of America for demonstrated excellent performance through program creativity, impact, achievement, and delivery. 2018. https://www.entsoc.org/esa-names-winners-2018-professional-and-student-awards
- Distinguished Achievement Award in Extension from the Eastern Branch of the Entomological Society of America for demonstrated excellent performance through program creativity, impact, achievement, and delivery. 2018.
- FLC Mid-Atlantic Awards: Educational Institution and Federal Laboratory Partnership Award for work on the Specialty Crop Initiative Coordinated Agriculture Project: The BMSB. 2017. I was a co-PI and contributed to applied research, development of educational materials, and outreach on this multi-state, multi-institution project.
- International Integrated Pest Management (IPM) Award of Recognition - 2015. USDA – BMSB Group Award. 8th International IPM Symposium. Salt Lake City, UT
- Outstanding Effort in Integrated Pest Management (IPM) Team Award. 2015. Recognition from: Maryland Nursery, Landscape, and Greenhouse Association.
- Eastern Branch of the Entomological Society of America Service Award. Presented for serving as President of the Society. 2015.
- Junior Faculty Award 2004. College of Agriculture and Natural Resources, University of Maryland.
- Recognition Award in Urban Entomology 2004. Eastern Branch Entomological Society of America.
- Special Recognition to Honor Outstanding Teachers. Celebrating Teachers Program, Center for Teaching Excellence, University of Maryland, College Park, MD. Spring 2003.
- Ph.D. in Entomology. University of Maryland, College Park, MD, 1996
- M.S. in Entomology. University of California, Riverside, CA, 1991
- B.S. in Plant Science. University of Rhode Island, No. Kingston, RI, 1985