Department of Entomology 



PhD, Entomology, University of Georgia, 1990

MS, Forest Ecology, Oregon State University, 1985

BS, Forest Science, Pennsylvania State University, 1981

Areas of Interest:

Forest entomology, ecology and management of forest insect pests, bark beetle ecology and pheromone-based management strategies, insect pests of young trees, biological control, invasive species, forest health, forest protection, ecological restoration.


2020-present Professor, Department of Entomology, School of Natural Resource Sciences, College of Agriculture, Food Systems, and Natural Resources, North Dakota State University

2007 – 2020 Professor, Department of Forest Ecosystems and Society (previously Department of Forest Science), Oregon State University

2006 – 2019 Director, Richardson Hall Quarantine Facility, Department of Forest Ecosystems and Society (previously Department of Forest Science), Oregon State University

1996 – 2007 Associate Professor, Department of Forest Science, Oregon State University

1990 – 1996 Assistant Professor, Department of Forest Science, Oregon State University

1990 Post-Doctoral Research Associate, Department of Entomology, University of Arkansas

Refereed journal articles and book chapters:

Ott, D.S., C.J. Fettig, A.S. Munson, J. Runyon, and D.W. Ross.  20XX.  Physical and chemical characteristics of blue and Engelmann spruce relative to spruce beetle host selection and colonization.  Forest Ecology and Management (submitted, in review).

Ross, D.W. and B.T. Sullivan. 20XX.  Douglas-fir beetle (Coleoptera: Curculionidae: Dendroctonus pseudotsugae) response to single point source 3-methylcyclohex-2-en-1-one (MCH) releasers.  Canadian Entomologist (in press).

Ross, D.W.  20XX.  MCH and the Douglas-fir beetle:  History of successful bark beetle pheromone treatments.  Canadian Entomologist (in press).

Foote, G.G., N.E. Foote, J.B. Runyon, D.W. Ross, and C.J. Fettig.  20XX.  Changes in the wild bee community following a Douglas-fir beetle outbreak in a mixed conifer forest. Environmental Entomology (in press).

Neidermeier, A.N., D.W. Ross, N.P. Havill, and K.F. Wallin.  20XX.  Temporal asynchrony of adult emergence between Leucopis argenticollis and  Leucopis piniperda, predators of the hemlock woolly adelgid (Adelges tsugae Annand), with implications for biological control.  Environmental Entomology (in press).

Foote, G.G., C.J. Fettig, D.W. Ross, J.B. Runyon, T.W. Coleman, M.L. Gaylord, A.D. Graves, J.D. McMillin, L.A. Mortenson, and A. Mafra-Neto.  20XX.  A biodegradable formulation for MCH (3-methylcyclohex-2-en-1-one) for protecting Pseudotsuga menziesii from Dendroctonus pseudotsugae (Coleoptera: Curculionidae) colonization. Journal of Economic Entomology (in press).

Rose, A., D.W. Ross, K.F. Wallin, N.P. Havill, and K. Motley.  2020.  Coexistence of three specialist predators of the hemlock woolly adelgid in the Pacific Northwest USA.  Bulletin of Entomological Research 101(3):303-308.

Rose, A., D.W. Ross, and K.F. Wallin.  2019.  Evaluating possible intraspecific variation in resistance of western hemlock to Adelges tsugae (Hemiptera: Adelgidae).  Canadian Entomologist 151(6):777-782.

Motley, K., N.P. Havill, A.L. Arsenault-Benoit, A.E. Mayfield, D.S. Ott, D.W. Ross, M.C. Whitmore, and K.F. Wallin. 2017.  Feeding by Leucopis argenticollis and Leucopis piniperda (Diptera: Chamaemyiidae) from the western USA on Adelges tsugae (Hemiptera: Adelgidae) in the eastern USA.  Bulletin of Entomological Research 107(5):699-704.

Ross, D.W., G.R. Kohler, and K.F. Wallin.  2017.  Predators collected from balsam woolly adelgid and Cooley spruce gall adelgid in western Oregon and Washington, U.S.A., with reference to biological control of hemlock woolly adelgid (Hemiptera: Adelgidae).  Pan-Pacific Entomol.  93(2):56-60.

Brookes, H.B., D.W. Ross, T.M. Strand, H.W. Thistle, I.R. Ragenovich, and L. Lowrey.  2016.  Evaluating high release rate MCH (3-methylcyclohex-2-en-1-one) treatments for preventing Dendroctonus pseudotsugae (Coleoptera: Curculionidae) infestations. J. Econ. Entomol. 109(6):2424-2427.

Kohler, G.R., K.F. Wallin, and D.W. Ross.  2016.  Seasonal phenology and abundance of Leucopis argenticollis, Leucopis piniperda (Diptera: Chamaemyiidae), Laricobius nigrinus (Coleoptera: Deridontidae) and Adelges tsugae (Hemiptera: adelgidae) in the Pacific Northwest USA.  Bulletin of Entomological Research 106: 546-550.

Ross, D.W., S.D. Gaimari, G.R. Kohler, K.W. Wallin, and S.M. Grubin.  2012.  Chapter 8: Chamaemyiid predators of the hemlock woolly adelgid from the Pacific Northwest, pp.  97-106.  In Implementation and Status of Biological Control of the Hemlock Woolly Adelgid, B. Onken and R. Reardon, eds.  USDA Forest Service, Forest Health Technology Enterprise Team, Morgantown, WV.

Strand, T., D.W. Ross, H. Thistle, I. Ragenovich, I. Matos, and B. Lamb.  2012.  Predicting Dendroctonus pseudotsugae (Coleoptera: Curculionidae) antiaggregation pheromone concentrations using an instantaneous puff dispersion model.  J. Econ. Entomol. 105(2):451-460.

Grubin, S.M., D.W. Ross, and K.F. Wallin.  2011.  Prey suitability and phenology of Leucopis spp. (Diptera: Chamaemyiidae) associated with hemlock woolly adelgid (Hemiptera: Adelgidae) in the Pacific Northwest.  Environ. Entomol. 40(6):1410-1416.

Wallin, K.F., T.M. Latty, and D.W. Ross.  2011.  Orientation behavior of the predator Laricobius nigrinus (Coleoptera: Derodontidae) to hemlock woolly adelgid and host tree odors in a multi-chambered olfactometer.  Environ. Entomol. 40(4):864-872.

Kohler, G.R., V.L. Stiefel, K.F. Wallin, and D.W. Ross.  2008.  Parasitoids reared from predators of hemlock woolly adelgid (Hemiptera: Adelgidae) and the hymenopterous parasitoid community on western hemlock in the Pacific Northwest.  Environ. Entomol.  37(6):1477-1487.

Ross, D.W., and K.F. Wallin  2008.  High release rate 3-methylcyclohex-2-en-1-one dispensers prevent Douglas-fir beetle (Coleoptera: Curculionidae) infestation of live Douglas-fir.  J. Econ. Entomol. 101(6):1826-1830.

Kohler, G.R., V.L. Stiefel, K.F. Wallin, and D.W. Ross. 2008.  Predators associated with the hemlock woolly adelgid (Hemiptera: Adelgidae) in the Pacific Northwest.  Environ. Entomol. 37(2):494-504.

Dodds, K.J., S.L. Garman, and D.W. Ross.  2006.  Landscape analyses of Douglas-fir beetle populations in Northern Idaho.  For. Ecol. and Manage. 231:119-130.

Dodds, K.J., S.L. Garman, and D.W. Ross.  2006.  Risk rating systems for the Douglas-fir beetle in the Interior Western USA.  West. J. Appl. For. 21(4):173-177.

Lysak, T., D.W. Ross, D.A. Maguire, and D.L. Overhulser.  2006.  Predicting spruce weevil damage in Sitka Spruce in the northern Oregon Coast Range.  West. J. Appl. For. 21(3):159-164.

Ross, D.W., B.B. Hostetler, and J. Johansen.  2006.  Douglas-fir beetle response to artificial creation of down wood in the Oregon Coast Range.  West. J. Appl. For. 21(3):117-122.

Ross, D.W., G.E. Daterman, and A.S. Munson.  2005.  Spruce beetle (Coleoptera: Scolytidae) response to traps baited with selected semiochemicals in Utah.  West. North Amer. Naturalist 65:123-126.

Dodds, K.J., and D.W. Ross.  2004.  Douglas-fir beetle lipid levels in relation to tree physical characteristics.  J. Entomol. Soc. British Columbia 101:13-20.

Ross, D.W., G.E. Daterman, and A.S. Munson.  2004.  Evaluation of the antiaggregation pheromone, 3-methylcyclohex-2-en-1-one (MCH), to protect live spruce from spruce beetle infestation in southern Utah.  J. Entomol. Soc. British Columbia 101:145-146.

Dodds, K.J., D.W. Ross, C. Randall, and G.E. Daterman.  2004.  Landscape level validation of a Douglas-fir beetle stand hazard rating system using geographical information systems.  West. J. Appl. For. 19:77-81.

Ross, D.W., G.E. Daterman, and K.E. Gibson.  2002.  Elution rate and spacing of antiaggregation pheromone dispensers for protecting live trees from Dendroctonus pseudotsugae (Coleoptera: Scolytidae).  J. Econ. Entomol. 95:778-781.

Dodds, K.J., and D.W. Ross.  2002.  Sampling range and range of attraction of Dendroctonus pseudotsugae pheromone-baited traps.  Can. Entomol. 134:343-355.

Dodds, K.J., and D.W. Ross.  2002.  Relative and seasonal abundance of woodborers (Buprestidae, Cerambycidae) and Cucujidae trapped in Douglas-fir beetle pheromone-baited traps in northern Idaho.  Pan-Pacific Entomol. 78:120-131.

Zhou, J., D.W. Ross, and C.G. Niwa.  2001.  Kairomonal response of Thanasimus undatulus (Say), Enoclerus sphegeus F. (Coleoptera: Cleridae), and Temnochila chlorodia (Mannerheim) (Coleoptera: Trogositidae) to bark beetle semiochemicals in eastern Oregon.  Environ. Entomol. 30:993-998.

Dodds, K.J., D.W. Ross, and G.E. Daterman.  2000.  A comparison of traps and trap trees for capturing Douglas-fir beetle, Dendroctonus pseudotsugae  (Coleoptera: Scolytidae).  J. Entomol. Soc. Brit. Columbia 97:33-38.

McElfresh, J.S., X. Chen, D.W. Ross, and J.G. Millar.  2000.  Sex pheromone blend of the pandora moth (Lepidoptera: Saturniidae), an outbreak pest in pine forests (Pinaceae).  Can. Entomol. 132:775-787.

Halaj, J., D.W. Ross, and A.R. Moldenke.  2000.  Importance of habitat structure to the arthropod food-web in Douglas-fir canopies.  Oikos 90:139-152.

Neal, T.A., and D.W. Ross.  1999.  Pathogenicity to western larch (Larix occidentalis) of two fungi, Ophiostoma  pseudotsugae and Leptographium abietinum, associated with the Douglas-fir beetle (Coleoptera: Scolytidae).  Agric. and Forest Entomol. 1:203-207.

Gerson, E.A., R.G. Kelsey, and D.W. Ross.  1999.  Pupal diapause of Coloradia pandora Blake (Lepidoptera: Saturniidae).  Pan-Pacific Entomol 75(3):170-177.

Prueitt, S.C., and D.W. Ross.  1998.  Effects of environment and genetics on Eucosma sonomana (Lepidoptera: Olethreutidae) infestation levels.  Environ. Entomol. 27(6):1469-1472.

Gerson, E.A., R.G. Kelsey, W.C. McComb, and D.W. Ross.  1998.  Palatability of Coloradia pandora (Lepidoptera: Saturniidae) eggs to a rodent predator: contributions of physical and chemical characteristics.  Environ. Entomol. 27(3):709-716.

Halaj, J., D.W. Ross, and A.R. Moldenke.  1998.  Habitat structure and prey availability as predictors of the abundance and community organization of spiders in western Oregon forest canopies.  J. Arachnology 26:203-220.

Ross, D.W., and G.E. Daterman.  1998.  Pheromone-baited traps for Dendroctonus pseudotsugae (Coleoptera: Scolytidae): influence of selected release rates and trap designs.  J. Econ. Entomol. 91(2):500-506.

Peck, R.W., A. Equihua-Martinez, and D.W. Ross.  1997.  Seasonal flight patterns of bark and ambrosia beetles (Coleoptera: Scolytidae) in northeastern Oregon.  Pan-Pacific Entomol. 73(4):204-212.

Ross, D.W., and C.G. Niwa.  1997.  Using aggregation and antiaggregation pheromones of the Douglas-fir beetle to produce snags for wildlife habitat.  West. J. Appl. For. 12(2):52-54.

Ross, D.W., and H. Solheim.  1997.  Pathogenicity to Douglas-fir of Ophiostoma pseudotsugae and Leptographium abietinum, fungi associated with the Douglas-fir beetle.  Can. J. For. Res. 27(1):39-43.

Ross, D.W., and G.E. Daterman.  1997.  Using pheromone-baited traps to control the amount and distribution of tree mortality during outbreaks of the Douglas-fir beetle.  For. Sci. 43(1):65-70.

Halaj, J., D.W. Ross, and A.R. Moldenke.  1997.  Negative effects of ant foraging on spiders in Douglas-fir canopies.  Oecologia 109:313-322.

Ross, D.W., K.E. Gibson, R.W. Thier, and A.S. Munson.  1996.  Optimal dose of an antiaggregation pheromone (3-methylcyclohex-2-en-1-one) for protecting live Douglas-fir from attack by Dendroctonus pseudotsugae (Coleoptera: Scolytidae).  J. Econ. Entomol. 89(5):1204-1207.

Halaj, J., D.W. Ross, R.R. Mason, T.R. Torgersen, and A.R. Moldenke.  1996.  Geographic variation in arboreal spider (Araneae) communities on Douglas-fir in western Oregon.  Pan-Pacific Entomol. 72:17-26.

Ross, D.W.  1996.  Phenology of pandora moth (Lepidoptera: Saturniidae) adult emergence and egg eclosion in central Oregon.  Pan-Pacific Entomol. 72:1-4.

Ross, D.W., and G.E. Daterman.  1995.  Efficacy of an antiaggregation pheromone for reducing Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins (Coleoptera: Scolytidae), infestation in high risk stands.  Can. Entomol. 127:805-811.

Ross, D.W.  1995.  Short-term impacts of thinning ponderosa pine on pandora moth densities, pupal weights, and phenology.  West. J. Appl. For. 10:91-94.

Ross, D.W., G. Birgersson, K.E. Espelie, and C.W. Berisford.  1995.  Monoterpene emissions and cuticular lipids of loblolly and slash pines: potential bases for oviposition preference of the Nantucket pine tip moth.  Can. J. Bot. 73:21-25.

Ross, D.W., and G.E. Daterman.  1995.  Response of Dendroctonus pseudotsugae (Coleoptera: Scolytidae) and Thanasimus undatulus (Coleoptera: Cleridae) to traps with different semiochemicals.  J. Econ. Entomol. 88:106-111.

Ross, D.W., and G.E. Daterman.  1994.  Reduction of Douglas-fir beetle infestation of high-risk stands by antiaggregation and aggregation pheromones.  Can. J. For. Res. 24:2184-2190.

Ross, D.W., P. Fenn, and F.M. Stephen.  1992.  Growth of southern pine beetle associated fungi in relation to the induced wound response in loblolly pine.  Can. J. For. Res. 22(12):1851-1859.

Ross, D.W., C.W. Berisford, and J.F. Godbee, Jr.  1990.  Pine tip moth, Rhyacionia spp., response to herbaceous vegetation control in an intensively site-prepared loblolly pine plantation.  For. Sci. 36(4):1105-1118.

Ross, D.W., and C.W. Berisford.  1990.  Nantucket pine tip moth (Lepidoptera: Tortricidae) response to water and nutrient status of loblolly pine.  For. Sci. 36(3):719-733.

Ross, D.W.  1990.  Sampling for pine shoot moths (Lepidoptera: Tortricidae): biological principles and procedures.  J. Agric. Entomol. 7(1):51-59.

Pickering, J., D.W. Ross, and C.W. Berisford.  1989.  An automated system for timing insecticidal sprays for Nantucket pine tip moth control.  South. J. Appl. For. 13(4):184-187.

Ross, D.W., J. Pickering, J.D. Berg, and C.W. Berisford.  1989.  Mapping Nantucket pine tip moth (Lepidoptera: Tortricidae) phenology in Georgia.  J. Entomol. Sci. 24(4):405-412.

Wagner, R.G., T.D. Petersen, D.W. Ross, and S.R. Radosevich.  1989.  Competition thresholds for the survival and growth of ponderosa pine seedlings associated with woody and herbaceous vegetation.  New Forests 3(2):151-170.

Ross, D.W.  1989.  Western pine shoot borer (Lepidoptera: Olethreutidae) response to site preparation in ponderosa pine plantations.  J. Econ. Entomol. 82(2):543-547.

Ross, D.W., W. Scott, R.L. Heninger, and J.D. Walstad.  1986.  Effects of site preparation on ponderosa pine (Pinus ponderosa), associated vegetation, and soil properties in southcentral Oregon.  Can. J. For. Res. 16(3):612-618.

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