Lucia Graciela Varela

North Coast IPM Advisor - Emeritus
UC ANR: Integrated Pest Management
2801 Second Street
Davis, CA 95618-7774
(707) 565-2621
lgvarela@ucanr.edu Create VCard

Also in:
Napa County
Mendocino County
Sonoma County

Education

Ph.D Entomology, UC Berkeley. 1990
M.S. Entomology, UC Berkeley. 1986
B.S. Biochemistry, UC Los Angeles. 1982

Specialty

Apples, pears, wine grapes, pest management

Areas of Expertise (click to see all ANR academics with this expertise)

Bibliography

Peer Reviewed

  • Cooper, M.L.; Hobbs, M.B.; Boser, C.L.; Varela, L.G. (2019). Argentine ant management: using toxin-laced polyacrylamide crystals to target ant colonies in vineyards. Catalyst: Discovery into practice. May.
  • Varela, LG; Wilen, CA; Daugherty, MP; Haviland, DR (2019). Glassy-winged Sharpshooter. UC IPM Pest Notes. Oakland, CA, UC ANR Publication 7492.
  • Varela, LG; DR, Haviland (2018). Monitoring Xylella fastidiosa insect vectors in Northern and Southern California to understand recent Pierce's disease incidence. IOBC-WPRS Bulletin. 139, 1-11.
  • Schartel, TE; Bayles, BR; Cooper, ML; Simmons, G; Thomas, SM; Varela, LG; Daugherty, MP (2018). Reconstructing the European Grapevine Moth (Lepidoptera: Tortricidae), invasion in California: insights from a successful eradication. Ann. Entomol. Soc. Am. https://doi.org/10.1093/aesa/say056
  • McGourty, G.; Wilson, H; Varela, L.G.; Daane, K.; Triapitsyn, S.; Keiffer, R. (2017). Integrated Pest Management Program for Virginia Creeper Leafhopper. Proceedings, GiESCO (Group of International Experts of Vitiviniculture Systems for Cooperation). 20th International Meeting, Mendoza, Argentina, 198.

  • Varela, LG; Cooper, ML; Lucchi, A. (2017). Update of the Lobesia botrana Program in California. IOBC - WPRS Bulletin. 128, 139-147. 

  • Varela, L.G.; Haviland, D.R.; Bentley, W.J.; Zalom, F.G.; Bettiga, L.J.; Smith, R.J.; Daane, K.M. (2015) Insects and mites. UC IPM Pest Management Guidelines: Grape. Univ. Calif. Div. Agric. Nat. Res. Publ: 3448 (revision from 2006),
  • Varela, L.G.; Bentley, W.J. (2015). Vineyard pest identification and monitoring cards. Univ. Calif. Div. Ag. & Nat. Res. ePubl. 9012/ibook; 9016/MOBI, 50 pp.
  • Ingels, C.; Varela, L. G. (2014) Brown marmorated stink bug. Pest Notes. UC ANR Publication 74169: 4 pp
  • Cooper, M.L.; Varela, L.G.; Smith, R.J; Whitmer, D; Simmons, G.S.; Luchi, A.; Broadway, R.; Steinhauer, R. (2014). "Growers, scientists and regulators collaborate on European grapevine moth program." California Agriculture 68(4): 125-133.
  • Bethke, J.A.; Dreistadt, S.H.; Varela, L.G. (2014) Thrips. In Pest Notes. UC ANR Publication 7429: 8 pp
  • Varela, L.G. (2013). Adult male mealybug identification. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (39) 261-263.
  • Varela, L.G. (2013). Aphids. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (29) 186.
  • Bettiga, L.J.; Varela, L.G.; Bentley, W.J. (2013). Brown marmorated stink bug. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (30) 187-188.
  • Varela, L.G.; Cooper, M.L; & Smith, R.J. (2013). "Can European grapevine moth, Lobesia botrana (Lepidoptera: Tortricidae) be eradicated from California?" IOBC-WPRS Bulletin 85: 95-102.
  • Varela, L.G.; Bentley, W.J.; Bettiga, L.J. (2013). Citrus flat mite (false spider mite). Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (76) 398.
  • Varela, L.G.; Cooper, M.L.; Zalom, F. (2013). European grapevine moth. Grape Pest Management Manual.L. Bettiga. Univ. of Calif. Div. Agric. Nat. Res. 3343.: (66) 346-351.
  • Varela, L.G.; Bentley, W.J.; Bettiga, L.J. (2013). Grape erineum mite. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (77) 399-402.
  • Perring, T.M.; Varela, L.G (2013). Grape rust mite. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (78) 403-404.
  • Varela, L.G; Weber, E.A.; Triapitsyn, S.V. (2013). Grape whitefly. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (47) 288-290.
  • Varela, L.G.; Lucchi, A.; Bagnoli, B.; Nicolini, G.; Ioriatti, C. (2013). "Impacts of standard wine-making process on the survival of Lobesia botrana larvae (Lepidoptera: Tortricidae) in infested grape clusters." J. Econ. Entomol 106(6): 2349-2353.
  • Varela, L.G. (2013). Katydids. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. Calif. Div. Agric. Nat. Res. Publ. 3343.: (26) 179-180.
  • Bettiga, L.J.; Varela, L.G. (2013). Larvae found in grape clusters. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (62) 335-336.
  • Bettiga, L.J.; Varela, L.G. (2013). Light brown apple moth. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (68) 360-363.
  • VanSteenwyk, R.A.; Varela, L.G.; Cooper, M.L. (2013). "Monitoring and control of European grapevine moth, Lobesia botrana (Lepidoptera: Tortricidae) in California vineyards." IOBC-WPRS Bulletin 85: 177-186.
  • Bettiga, L.J.; Varela, L.G.; Phillips, P.A (2013). Orange tortrix. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (70) 372-377.
  • Purcell, A.H.; Kirkpatrick, B.C.; Almeida, R.; Varela, L.G.; Smith, R.J.; Weber, E.A.; Hashim, J.M.; Gispert, C. (2013). Pierce's disease. Grape Pest Management Manual. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (9) 75-82.
  • Varela, L.G; Daane, K.M.; Phillips, P.A.; Bettiga, L.J.; Triapitsyn, S.V. (2013). Scale insects. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (44) 273-276.
  • Varela, L.G; Smith, R.J; Purcell, A.H.; Hashim, J.M.; Weber, E.A.; Haviland, D.R. (2013). Sharpshooters. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (45) 277-285.
  • Zalom, F.G; Bentley, W.J.; Varela, L.G.; Bettiga, L.J.; Haviland, D.R. (2013). Spider mites. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (79) 405-421.
  • Varela, L.G; Daane, K.M. (2013). Virginia creeper leafhopper. Grape Pest Management Manual.L. Bettiga. Oakland, Univ. of Calif. Div. Agric. Nat. Res. 3343.: (36) 235-236.
  • Ioriatti, C.; Lucchi, A.; Varela, L.G. (2012). Grape berry moths in Western European vineyards and their recent movement into the New World. Arthropod Management in Vineyards: Pests, Approaches, and Future Directions.N. Bostanian, C. Vincent and R. Isaacs. Springer.: 339-360.
  • Varela, L.G.; Elkins, R.B.; Van Steenwyk, B.; Ingels, C. (2012). Insects and mites. UC IPM Pest Management Guidelines: Pear. Univ. Calif. Div. Agric. Nat. Res. Publ. 3455. 2002.
  • Varela, L.G.; Bentley, W.J. (2012). Tarjetas de indentificación y monitoreo de plagas de la vid. Univ. Calif. Div. Ag. & Nat. Res. Publ. Calif. Div. Agric. Nat. Res. Publ. 3538, 50 pp. 2012.
  • Varela, L.G.; Elkins, R.B.; Van Steenwyk, R.A. (2011). Evolution of Secondary Pests in California Pear Orchards under Mating Disruption for Codling Moth Control. Acta Hort. 909, ISHS 531-542.
  • Varela, L.G.; Bentley, W.J. (2011). Vineyard pest identification and monitoring cards. Univ. Calif. Div. Agric. Nat. Res. Publ. 3532, 50 pp. 2011.
  • Varela, L.G.; Walker, J.T.S.; Lo, P.L.; Rogers, D.J. (2010). "New Zealand Lessons May Aid Efforts to Control Light Brown Apple Moth in California." California Agriculture 64(1): 6-12.
  • Varela, L.G.; Elkins, R.B. (2008). "Conversion from use of organophosphate insecticides to codling moth mating disruption in California Pear Orchards." Acta Hort 800, ISHS 955-960
  • Varela, L.G.; Johnson, M.W.; Strand, L.; Wilen, C.; Pickel, C. (2008). "Light brown apple moth's arrival in California worries commodity groups." California Agriculture 62(2): 57-61.
  • Cooper, M.L.; Daane, K.M.; Nelson, E.H.; Varela, L.G.; Battany, M.; Tsutsui, N.D.; Rust, M.K. (2008). "Liquid baits control Argentine ants sustainably in coastal vineyards." California Agriculture 62(4): 177-193.
  • Smith, R.J.; Varela, L.G. (2008). "Pomace management reduces spread of vine mealybug. In: Vineyard managers and researchers seek sustainable solutions for mealybugs, a changing pest complex." California Agriculture 62(4): 172-173.
  • Bentley, W.J.; Varela, L.G.; Daane, K.M. (2007). Grapes, insects, ecology and control. Encyclopedia of Pest Management.D. Pimentel. New York, Taylor and Francis Group, LLC.
  • Van Steenwyk, R.A.; Varela, L.G.; Moratorio, M. (2007). Insects and mite pests. California Pear Production and Handling Manual.E. Mitcham and R. Elkins. Univ. Calif. Div. Agric. Nat. Res. Publ. 3483: 135-144.
  • Bentley, W.J.; Varela, L.G.; Zalom, F.; Smith, R.J.; Purcell, A.; Phillips, P. (2006). Insects and mites. UC IPM Pest Management Guidelines: Grape. Univ. Calif. Div. Agric. Nat. Res. Publ. 3448. 2006.
  • Varela, L.G.; Bentley, W.J.; Daane, K.M. (2005). Grapes, Insects, Ecology and Control. Encyclopedia of Pest Management.D. Pimentel. New York, Taylor & Francis Group, LLC. 2005. http://www.dekker.com/sdek/abstract~db=enc~content=a713603090
  • Dahlsten, D.L.; Daane, K.M.; Paine, T.D.; Lawson, A.B.; Roltson, W.; Kabashima, J.N.; Robb, K.L.; Geisel, P.M.; Ingels, C.A.; Bianchi, M.L. (2005). "Imported Parasitic Wasp Helps Control Red Gum Lerp Psyllid." California Agriculture 59(4): 229-234.
  • Bentley, W.J.; Zalom, F.; Granett, J.; Smith, R.J.; Varela, L.G.; Purcell, A (2003). Insects and mites. UC IPM Pest Management Guidelines: Grape. Univ. Calif. Div. Agric. Nat. Res. Publ. 3448. 2003.
  • Caprile, J.L.; Varela, L.G.; Pickel, C.; Coates, W.W.; Bentley, W.J.; Vossen, P.M. (2002). Insects and mites. UC IPM Pest Management Guidelines: Apple. Univ. Calif. Div. Agric. Nat. Res. Publ. 3432. 2002.
  • Varela, L.G.; Wilen, C.A. (2001). Glassy-Winged Sharpshooter Identification and Monitoring/Identificación y Monitoreo de la Chicharrita de Alas Cristalinas. Calif. Div. Agric. Nat. Res. Publ. V01-A. 2001.
  • Phillips, P.A.; Wilen, C.A.; Varela, L.G. (2001). "Glassy-winged Sharpshooter; Integrated Pest Management for Home Gardeners and Landscape Professionals." UC IPM Pest Notes Publ. 7492: 4 pp.
  • Varela, L.G.; Smith, R.J.; Phillips, P.A. (2001). Pierce's disease. Univ. Calif. Div. Agric. Nat. Res. Publ. 21600, 20 pp. 2001.
  • Varela, L.G. (2000). Disease and Pest Management. Organic Apple Production Manual.S. Swezey. Univ. Calif. Div. Agric. Nat. Res. Publ. 3404: 19-43.
  • Caprile, J.L.; Elkins, R.B.; Varela, L.G. (1999). Integrated Pest Management for Apples and Pears. Oakland: Univ. Calif. Div. Agric. Nat. Res. Publ. 3340, 231. 1999.
  • Andreasen, J.; Varela, L.G. (1999). Pesticide Disposal in Developing Countries. A training Module. U.S. Environmental Protection Agency International Training Module. 1999.
  • Varela, L.G.; Shearer, P.W.; Jones, V.P.; Riedl, H.; Welter, S.C. (1997). "Monitoring of Insecticide Resistance in Phyllonorycter mespilella (Lepidoptera: Gracillariidae) in four Western states." J. of Econ. Entomol 90(2): 252-260.
  • Varela, L.G.; Cowles, R.S.; Donaldson, D.R. (1996). "Spring Insecticide Treatments Control Adelgids on Douglas Fir." California Agriculture 80(5): 34-37.
  • Vossen, P.; Desmond, J.; Meyer, R.; Varela, L.G.; Blodgett, S. (1994). "Disease, Insect Pressures Make Organic Production Risky in Sonoma County." California Agriculture 48(6): 29-36.
  • Shearer, P.W.; Varela, L.G.; Riedl, H.; Welter, S.C.; Jones, V.P. (1994). "Topical Pheromone Trap Assay for Monitoring Insecticide Resistance of Phyllonorycter elmaella (Lepidoptera: Gracillariidae)." J. Econ. Entomol 87(6): 1441-1449.
  • Varela, L.G.; Welter, S.C.; Jones, V.P.; Brunner, J.F.; Riedl, H. (1993). "Monitoring and Characterization of Insecticide Resistance in Codling Moth (Lepidoptera: Tortricidae) in Four Western States." J. Econ. Entomol 86(1): 1-10.
  • Varela, L.G.; Welter, S.C. (1992). "Parasitoids of the Leafminer, Phyllonorycter nr. elmaella (Lepidoptera: Gracillariidae), on apple in California: abundance, impact on leaf miner, and insecticide-induced mortality." Biological Control 2(2): 124-130.

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