Ph.D. University of Minnesota, 1991, Entomology
Areas of Interest
Pest Management in Grass Seed and Rotational Crops,
Native Bee Pollinators in Agricultural and Native Landscapes
Hoffman, G. D. and Rao, S. 2014. Fertilization of Epichloë typhina stromata by mycophagous slugs. Mycologia 106: 1-7. doi:10.3852/13-069
Rao, S. and Skyrm, K. M. 2013. Nest density of the native bumble bee, Bombus nevadensis Cresson (Hymenoptera: Apoidea), in an agricultural landscape. Journal of the Kansas Entomological Society. 86: 93-97.
Hoffman, G. D. and Rao, S. 2013. Association of slugs with the fungal pathogen Epichloë typhina (Ascomycotina: Clavicipitaceae): potential role in stroma fertilization and disease spread. Annals of Applied Biology. 162: 324-334. DOI: 10.1111/aab.12024. 7
Rao, S. and Strange, J. P. 2012. Bumble bee (Hymenoptera: Apidae) foraging distance and colony density associated with a late-season mass flowering crop. Environmental Entomology. 41: 905-915.
Roberts, D. and Rao, S. 2012. Extension leads multi-agency team in suppressing a pest in the west. Journal of Extension. 50: 2FEA10. http://www.joe.org/joe/2012april/a10.php.
Roberts, D., Vyhnanek, K. and Rao, S. 2012. Multi-agency team uses university archival tool to conserve vital project information. Journal of Extension. 50: 2TOT8. http://www.joe.org/joe/2012april/tt8.php.
Skyrm, K. M., Rao, S. and Stephen, W.P. 2012. A scientific note on bivoltinism in western North American bumble bees. Apidologie. 43: 82-84. DOI:10.1007/s13592-011-0086-9.
Rao, S., Alderman, S. C., Kaser, J. M. and Hoffman, G. D. 2012. Fertilization of Epichloë typhina in cultivated Dactylis glomerata by factors besides Botanophila flies. pp: 122-126. In:
Young, C. A., Aiken, G. E., McCulley, R. L., Strickland, J. R. and Schardl, C. L., (eds). Epichloae, endophytes of cool season grasses: Implications, utilization and biology. The Samuel Roberts Noble Foundation, Ardmore, OK, USA.
Kimoto, C., DeBano, S. J., Thorp, R. W., Rao, S. and Stephen, W. P. 2012. Investigating temporal patterns of a native bee community in a remnant North American bunchgrass prairie using blue vane traps. Journal of Insect Science.12:108. http://www.insects cience.org/12.108.
Kimoto, C., DeBano, S. J., Thorp, R. W., Taylor, R. V., Schmalz, H., DelCurto, T., Johnson, T., Kennedy, P. L. and Rao, S. 2012. Short-term responses of native bees to livestock and implications for managing ecosystem services in grasslands. Ecosphere. 3:art88. http://www.esajournals.org/doi/abs/10.1890/ES12-00118.1
Hoffman, G. D. and Rao, S. 2011. Cereal leaf beetle, Oulema melanopus (L.) (Coleoptera: Chrysomelidae) oviposition site selection on oats: effects of plant architecture, plant and leaf age, tissue toughness, and hardness. Entomologia Experimentalis et Applicata.141: 232-244.
Maxfield-Taylor, S., Rao, S. and Skyrm, K. M. 2011. A scientific note on the first record of Sphaerularia bombi (Nematoda: Tylenchida: Sphaerularidae), a parasite of bumble bee queens, in the Pacific Northwest. The Pan-Pacific Entomologist. 87: 136-139.
Scherr, M., Wooster, D. and Rao, S. 2011. Interactions between macroinvertebrate taxa and complex environmental gradients influencing abundance and distribution in the Umatilla River, northeastern Oregon. Journal of Freshwater Ecology. 26: 255-266.
Rao, S., Stephen, W. P., Kimoto, C. and DeBano, S. 2011. The status of the 'red listed' Bombus (Bombus) occidentalis (Hymenoptera: Apiformes) in northeastern Oregon. Northwest Science 85: 64-67.
Broussard, M., Rao, S., Stephen, W. P. and White, L. 2011. Native bees, honey bees and pollination in Oregon cranberries. HortScience. 46: 1-4.
Rao, S. and Stephen, W. P. 2010. Abundance and diversity of bumble bees associated with agricultural crops: The Willamette Valley Experience. Psyche Article ID 354072: http://dx.doi.org/10.1155/2010/354072.
Hoffman, G.D. and Rao, S. 2010. Cereal leaf beetle, Oulema melanopus (L.) (Coleoptera: Chrysomelidae), attraction to oat plantings of different ages. Journal of the Entomological Society of British Columbia. 107: 57-66. 8
Maynard, G. and Rao, S. 2010. The solitary bee, Leioproctus (Leioproctus) nigrofulvus, in SE Australia: Unique termite-mound-nesting behavior and impacts of bushfires on local populations. Pan-Pacific Entomologist. 86: 14-19.
Rao, S., Alderman, A. and Murphy, A. 2010. Floret-infesting thrips in grass seed crops: Crop host range and seed loss. Seed Technology. 32: 26-36.
Alderman, S.C., Rao, S. and Martin, R. 2010. First report of Dicyma pulvinata on Epichloë typhina and potential for E. typhina control. Plant Health Progress. doi:10.1094/PHP- 2010-0216-01-RS.
Scherr, M., Wooster, D. and Rao, S. 2010. Effects of temperature on growth rate, development, and behavior of Epeorus albertae (Ephemeroptera: Heptageniidae) nymphs. Environmental Entomology. 39: 2017-2024.
Rao, S. and Stephen, W. P. 2009. Bumble bee pollinators in red clover seed production. Crop Science. 49: 2207-2214. Bergh, J. and Rao, S. 2009. New record and damage by Eurytomocharis eragrostidis species complex (Chalcidoidea: Eurytomidae) infesting teff (Eragrostis tef) in Oregon. Journal of the Entomological Society of British Columbia.106: 85-86.
Rao, S., Stephen, W. P. and White, L. 2009. Native bee pollinator diversity in Oregon blueberries. Acta Horticulturae. 810: 539-548.
Stephen, W. P., Rao, S. and White, L. 2009. Abundance, diversity and foraging contribution of bumble bees to blueberry production in Oregon. Acta Horticulturae. 810: 557-562.
Alderman, S. and Rao, S. 2008. Ascosporic fertilization of Epichloë typhina in Dactylis glomerata seed production fields in Oregon and implications for choke management. Plant Health Progress. doi:10.1094/PHP-2008-0421-01-BR.
Rao, S. and Stephen, W. P. 2007. Bombus (Bombus) occidentalis (Hymenoptera: Apiformes): In decline or recovery? Pan-Pacific Entomologist. 83: 360-362. Stephen, W. P. and Rao, S. 2007. Sampling native bees in proximity to a highly competitive food resource. Journal of the Kansas Entomological Society. 80: 369-376.
Rao, S., Shamah, D. and Collay, R. 2007. Meaningful involvement of science undergraduates in K-12 outreach. Journal of College Science Teaching. 36: 54-58.
Rao, S., Scherr, M., Royce, L., Stephen, W. P., Halse, R. and Soeldner, A. 2007. Bees and pollination: A ‘scientist’ experience for rural youth in Oregon. American Entomologist. 53: 74-77.
Rao, S., Liston, A., Crampton, L. and Takeyasu, J. 2006. Identification of larvae of exotic Tipula paludosa (Diptera: Tipulidae) and T. oleracea in North America using mitochondrial cytB sequences. Annals of the Entomological Society of America. 99: 33-40.
Umble, J., Fisher, G. and Rao, S. 2006. Sampling methods and seasonal phenology of Sphenophorus venatus confluens Chittenden (Coleoptera: Curculionidae) in orchardgrass (Dactylis glomerata L.). Journal of Agricultural and Urban Entomology. 22: 79-85.
Rao, S., and Alderman, S. 2005. Infestation of bent grass by a new seed pest, Chirothrips manicatus (Thysanoptera: Thripidae), in Oregon. Journal of the Entomological Society of British Columbia. 102: 77-78.
Stephen, W. P. and Rao, S. 2005. Unscented Traps for Non-Apis Bees (Hymenoptera: Apoidea). Journal of the Kansas Entomological Society. 78: 373-380. 9
Rao, S., Alderman, S., Takeyasu, J. and Matson, B. 2005. The Botanophila-Epichloë association in cultivated Festuca in Oregon: evidence of simple fungivory. Entomologia Experimentalis et Applicata. 115: 427-433.
Rao, S. 2004. Plant-Insect interactions. In: Goodman, R. M. (ed.), Encyclopedia of Plant & Crop Science: Herbivores / Insects, Marcel Dekker, Inc., New York, NY. pp: 609-611. Rao, S. and Baumann, D. 2004. The interaction of a Botanophila fly species with an exotic Epichloë fungus in a cultivated grass: fungivore or mutualist? Entomologia Experimentalis et Applicata.112: 99-105.
Umble, J. and Rao, S. 2004. Exotic Tipula paludosa and T. oleracea (Diptera: Tipulidae) in the US: Geographic distribution in western Oregon. Pan-Pacific Entomologist. 80:42-52.
Armer, C., Rao, S. and Berry, R. 2004. Insect cellular and chemical limitations to pathogen development: the Colorado potato beetle, the nematode Heterorhabditis marelatus, and its symbiotic bacteria. Journal of Invertebrate Pathology. 87:114-122.
Rao, S. and Gelhaus, J. 2003. Peppermint, a new host record for crane flies (Diptera: Tipulidae). Pan-Pacific Entomologist. 79: 45-46.
Rao, S. Shamah, D. and Royce, L. 2003. Integrating graduates and undergraduates in science education in rural Oregon schools. American Entomologist. 49: 136-139.
Rao, S., Cossé, A. A., Bartelt, R. J. and Zilkowski, B. W. 2003. Aggregation pheromone of the cereal leaf beetle: field evaluation and emission rates. Journal of Chemical Ecology. 29: 2165-2175.
• Distinction in Student Mentoring Award, PBESA, 2013.
• Fulbright Scholar Award, Council for International Exchange of Scholars, 2012.
• Distinguished Achievement Award in Teaching, Entomological Society of America. 2010.
• Oldfield/ Jackman Team Award, College of Agricultural Sciences, OSU. 2006.
• Administrator's Award for team work in IPM, APHIS PPQ. 2010.
• Hodson Alumnus Award, Department of Entomology, University of Minnesota. 2009.
• Deputy Administrator's Safeguarding Award for IPM team research, USDA. 2009.
• Western Region Extension Director’s Award of Excellence. 2009.
• IPM Team Award, Pacific Branch, Entomological Society of America. 2009.
• OECD Fellowship (Organization for Economic Cooperation and Development), France. 2008. (to Australia)
• L.L. Stewart Faculty Scholar (along with two colleagues), Oregon State University. 2007.
• Teaching Award, Pacific Branch, Entomological Society of America. 2007.
• Educator of the Year Award, Linn Soil and Water Conservation District, Linn County, Oregon. 2006.
• Oldfield/ Jackman Team Award, College of Agricultural Sciences, OSU. 2006.
• Rural Studies Program Faculty Fellow, Rural Studies Program, OSU. 2006.