Research & Services

In addition to the fun and adventure of AphidTrekking in the forests, mountains, and natural systems, aphids can be serious and study of them supremely practical. Andy Jensen graduated Oregon State University with a Ph.D. in aphid systematics in 1996 after working in practical pest management research in potato research plots in Oregon for 8 years.  Since then, Andy has 19 further years of experience working with aphids and other small insects in the field, understanding how to recognize important pests, assessing the likely pest ecology in agro-ecosystems, offering training to farmers and others on insect sampling and recognition, and of course helping people around the world with aphid identification.  Andy is currently employed as Manager of the Northwest Potato Research Consortium and is also adjunct faculty with the Washington State University Department of Entomology.  See the ‘Examples’ tab under ‘Services,’ and see below Andy’s publication record if you are interested.

Horton, D.R., W. R. Cooper, J.E. Munyaneza, K.D. Swisher, E. Echegaray, A.F. Murphy, S.I. Rondon, C.H. Wohleb, T.D. Waters, A.S. Jensen. 2015. A new problem with old questions: potato psyllid in the Pacific Northwest. American Entomologist 61: 234-244.

 Jensen, A.S. 2015. Two New Species of Macrosiphum Passerini (Hemiptera: Aphididae) From Western North America. Proceedings of the Entomological Society of Washington 117: 481-494.

Eiseman, C.S. and A.S. Jensen. 2015. Insects Feeding on Sea Lavender (Plumbaginaceae: Limonium carolinianum [Walt.] Britt) along the New England Coast. Entomological News 124(5): 362-367.

Miller, G.L., A.S. Jensen, M.A. Metz, R.R. Parmenter. 2014. A New Species of Atheroides Haliday (Hemiptera, Aphididae) Native to North America. Zookeys, 452: 35–50.

Horton, D.R., E. Miliczky, J.E. Munyaneza, K.D. Swisher, A.S. Jensen. 2014. Absence of Photoperiod Effects on Mating and Ovarian Maturation by Three Haplotypes of Potato Psyllid, Bactericera cockerelli (Hemiptera: Triozidae). Journal of the Entomological Society of British Columbia, 111: 4-15.

Jensen, A.S. 2013. The Aphid (Hemiptera: Aphididae) Genus Aphthargelia Hottes, with One New Species. Zootaxa 3701 (3): 381-392.

Murphy A.F., S.I. Rondon, and A.S. Jensen. 2013. First Report of Potato Psyllids, Bactericera cockerelli, Overwintering in the Pacific Northwest. American Journal of Potato Research 90: 294-296.

Murphy A.F., S.I. Rondon, and A.S. Jensen. 2012. Population Dynamics of the Beet Leafhopper (Hemiptera: Cicadellidae) in the Columbia Basin as Influenced by Abiotic Variables. Environmental Entomology 41 (4): 768-775.

Jensen, Andrew. 2012. Potato Arthropod Pests: Ecology and Control. In Encyclopedia of Pest Management. Taylor and Francis: New York, Published online: 17 Jul 2012; 1‑4.

Jensen, A.S. 2012. Macrosiphum (Hemiptera: Aphididae) Update: One New Species, One Synonymy, and Life Cycle Notes. Proceedings of the Entomological Society of Washington 114: 205-216.

Pantoja, P., A.M. Hagerty, S.Y. Emmert, J.C. Kuhl, K. Pike, J.M. Alvarez, and A. Jensen. 2010. Aphids (Hemiptera: Aphididae) associated with rhubarb (Rheum spp.) in the Matanuska Valley, Alaska: species composition, seasonal abundance, and potential vectors. J. Entomol. Soc. Brit. Columbia 107: 75-81.

Jensen A.S., G.L. Miller, A. Carmichael. 2010. Host range and biology of Uroleucon (Lambersius) erigeronense (Thomas 1878), and its synonymy with Uroleucon (Lambersius) escalantii (Knowlton 1928) (Hemiptera: Aphididae). Proceedings of the Entomological Society of Washington 112: 239‑245.

Jensen, A.S. and C.K. Chan. 2009. Macrosiphum living on Fumariaceae in northwestern North America, including one new species (Hemiptera: Aphididae). Proceedings of the Entomological Society of Washington 111: 617‑626.

DeBano, S.J., P.B. Hamm, A. Jensen, S.I. Rondon, and P.J. Landolt. 2009. Spatial and Temporal Dynamics of Potato Tuberworm (Lepidoptera: Gelechiidae) in the Columbia Basin of the Pacific Northwest. Environmental Entomology 39: 1-14.

Favret, C., G.L. Miller, A.S. Jensen. 2008. Fitch’s Aphis mali varieties are Rhopalosiphum oxyacanthae (Hemiptera: Aphididae). Entomological News 119: 521-523.

Munyaneza, J.E., A.S. Jensen, P.B. Hamm, J.E. Upton. 2008. Seasonal Occurrence and Abundance of Beet Leafhopper in the Potato Growing Region of Washington and Oregon Columbia Basin and Yakima Valley. American Journal of Potato Research 85: 77–84.

Miller, G.L. and A.S. Jensen. 2006. Revision of the North American Aphid Genus Bipersona Hottes (Hemiptera: Aphididae). Proceedings of the Entomological Society of Washington 108: 793-807.

Hampton, R.O., A.S. Jensen, and T. Hagel. 2005. Attributes of Bean Yellow Mosaic Potyvirus Transmission from Clover to Snap Beans by Four Species of Aphids. Journal of Economic Entomology 98: 1816-1823.

Crosslin, J.M., J.E. Munyaneza, A. Jensen, and P.B. Hamm. 2005. Association of beet leafhopper (Hemiptera: Cicadellidae) with a clover proliferation group phytoplasma in Columbia Basin of Washington and Oregon. Journal of Economic Entomology 98: 279‑283.

Koss, A. M., A.S. Jensen, A. Schreiber, K.S. Pike, and W.E. Snyder. 2005. Comparison of Predator and Pest Communities in Washington Potato Fields Treated with Broad‑Spectrum, Selective, or Organic Insecticides. Environmental Entomology 34: 87-95.

Duan, J.J., G. Head, A.S. Jensen, and G.L. Reed. 2004. Effects of transgenic Bacillus thuringiensis potato and conventional insecticides for Colorado potato beetle (Coleoptera: Chrysomelidae) management on the abundance of ground-dwelling arthropods in Oregon potato ecosystems. Environmental Entomology 33: 275-281.

Miller, G.L., A.S. Jensen, and M.B. Stoetzel. 2001. Lectotype designations of two species of Lachninae described by H.F. Wilson (Hemiptera: Aphididae). Proceedings of the Entomological Society of Washington 103: 554-557.

Reed, G.L., A.S. Jensen, J. Riebe, G. Head, J.J. Duan. 2001. Transgenic Bt potato and conventional insecticides for Colorado potato beetle management: comparative efficacy and non‑target impacts. Entomologia experimentalis et applicata. 100 (1): 89‑100.

Jensen, A.S. 2001. A cladistic analysis of Dialeurodes, Massilieurodes, and Singhiella with notes and keys to the Nearctic species and descriptions of four new Massilieurodes species (Hemiptera: Aleyrodidae). Systematic Entomology 26: 279-310.

Jensen, A.S. and J. Holman. 2000. Macrosiphum on ferns: taxonomy, biology and evolution, including the description of three new species (Hemiptera: Aphididae). Systematic Entomology 25: 339-372.

Jensen, A.S. 2000. Eight new species of Macrosiphum Passerini from western North America, with notes on four other poorly known species (Hemiptera: Aphididae). Proceedings of the Entomological Society of Washington 102: 427-472.

Stoetzel, M.B., A.S. Jensen, & G.L. Miller. 1999. Reevaluation of the genus Hyalomyzus Richards with the description of two new species (Homoptera: Aphididae). Annals Entomological Society of America 92: 488-513.

Jensen, A.S. 1999. Cladistics of a sampling of the world’s diversity of whiteflies of the genus Dialeurodes Cockerell (Hemiptera: Aleyrodidae). Annals Entomological Society of America 92: 359-369.

Jensen, A.S. and M.B. Stoetzel. 1999. An examination of the North American aphid species currently placed in Ovatus van der Goot (Hemiptera: Aphididae) with the description of a new genus. Proceedings of the Entomological Society of Washington 101: 39-56.

Jensen, A.S. 1998. Redescription of Macrosiphum impatientis (Williams), another rose aphid from eastern North America, with a key to related species (Hemiptera: Aphididae). Proceedings of the Entomological Society of Washington 100: 32-42.

Jensen, A.S. 1997. Redefinition of the aphid genus Sitobion Mordvilko (Hemiptera: Aphididae) based on cladistic analyses, with emphasis on North American species. Systematic Entomology 22: 333-344.

Zhang, Z.Q. and A. Jensen. 1995. The adult and larva of a new species of Podothrombium (Acari: Trombidiidae) associated with aphids in Oregon. International Journal of Acarology 21: 3-9.

Jensen, A.S., J.D. Lattin and G.L. Reed. 1993. Host plant alternation in two fern-feeding Sitobion Mordvilko. in: Critical Issues in Aphid Biology: Proceedings of the 4th International Symposium on Aphids. P. Kindlmann and A.F.G. Dixon, eds. 142 pp.

Jensen, A.S. 1992. Exotic aphids in Oregon. The Northwest Environmental Journal. 8: 217-218.