Nontarget Effects - The Achilles' Heel of Biological Control? Retrospective Analyses to Reduce Risk Associated with Biocontrol Introductions

Annual Review of Entomology

Volumn 48, Issue , 2003, Pages 365-396

  Louda, S M ^a   Pemberton, R W ^b   Johnson, M T ^c   Follett, P A ^d  

^a UNIVERSITY OF NEBRASKA   (United States)

^b INVASIVE PLANT RESEARCH LABORATORY   (United States)

^c USDA FOREST SERVICE   (United States)

^d AGRICULTURAL RESEARCH SERVICE   (United States)

Author keywords

Classical biological control; Ecological risk; Insect control; Weed control

Indexed keywords

BIOLOGICAL CONTROL; NONTARGET ORGANISM; RISK ASSESSMENT;

INSECTA;

ANIMAL; BIOLOGICAL PEST CONTROL; ECOSYSTEM; FOOD CHAIN; METHODOLOGY; PLANT; RETROSPECTIVE STUDY; REVIEW; RISK ASSESSMENT; SAFETY;

ANIMALS; ECOSYSTEM; FOOD CHAIN; PEST CONTROL, BIOLOGICAL; PLANTS; RETROSPECTIVE STUDIES; RISK ASSESSMENT; SAFETY;

EID: 0037209072     PISSN: 00664170     EISSN: None     Source Type: Book Series    
DOI: 10.1146/annurev.ento.48.060402.102800     Document Type: Review

References (141)

1. Andres LA. 1985. Interactions of Chrysolina quadrigemina and Hypericum spp. in California. See Ref. 22, pp. 235-39
2. Angalet GW, Tropp JM, Eggert AN. 1979. Coccinella septempunctata in the United States: recolonizations and notes on its ecology. Environ. Entomol. 8:896-901
3. Arnaud PH. 1978. A Host-Parasite Catalog of North American Tachinidae (Diptera). Washington, DC: U.S. Dep. Agric. Misc. Publ. No. 1319. 860 pp.
4. Arnett AE, Louda SM. 2002. Re-test of Rhinocyllus conicus host specificity, and the prediction of ecological risk in biological control. Biol. Conserv. 106:151-57
5. Barratt BIP, Evans AA, Ferguson CM, Barker GM, McNeill MR, Phillips CB. 1997. Laboratory nontarget host range of the introduced parasitoids Microctonus aethiopoides and M. hyperodae (Hymenoptera: Braconidae) compared with field parasitism in New Zealand. Environ. Entomol. 26(3):694-702
6. Barratt BIP, Ferguson CM, Goldson SL, Phillips CM, Hannah DJ. 1999. Predicting the risk from biological control agent introductions: a New Zealand approach. See Ref. 36, pp. 59-75
7. Barratt BIP, Ferguson CM, McNeill MR, Goldson SL. 1999. Parasitoid host specificity testing to predict host range. In Recommendations for Host Specificity Testing Procedures in Australasia - Towards Improved Assays for Biological Control Agents, ed. TM Withers, L Barton-Browne, JN Stanley, pp. 70-83. Brisbane, Austr.: CRC Trop. Pest Manag.
8. Bennett FD, Habeck DH. 1995. Cactoblastis cactorum: a successful weed control agent in the Caribbean, now a pest in Florida. Proc. 8th Int. Symp. Biol. Control Weeds, 2-7 February 1992, ed. ES Delfosse, RR Scott, pp. 21-6. Canterbury, N. Z.: Lincoln Univ.
9. Benson J, Pasqualte A, Van Driesche RG, Elkinton J. 2002. Assessment of risk posed by introduced braconid wasps to Pieris virginiensis, a native woodland butterfly in New England. Biol. Control. In press
10. Bess HA, van den Bosch R, Haramoto FH. 1961. Fruit fly parasites and their activities in Hawaii. Proc. Hawaii. Entomol. Soc. 17:367-78
11. Boettner GH, Elkinton JS, Boettner CJ. 2000. Effects of a biological control introduction on three nontarget native species of Saturniid moths. Conserv. Biol. 14:1798-806
12. Bowers RG, Begon M. 1991. A host-host pathogen model with free-living infective stages, applicable to microbial pest control. J. Theor. Biol. 148:303-29
13. Brown MW, Miller SS. 1998. Coccinellidae (Coleoptera) in apple orchards of eastern West Virginia and the impact of invasion by Harmonia axyridis. Entomol. News 109:136-42
14. Burger JC, Louda SM. 1994. Indirect vs. direct effects of grasses on growth of a cactus (Opuntia fragilis): insect herbivory vs. competition. Oecologia 99:79-87
15. Callaway RM, De Luca TH, Belliveau WM. 1999. Biological-control herbivores increase competitive ability of the noxious weed Centaurea maculosa. Ecology 80:1196-201
16. Clausen CP. 1978. Introduced Parasites and Predators of Arthropod Pests and Weeds: A World Review. Washington, DC: Supt. Doc., U.S. Gov. Print. Off.
17. Colunga-Garcia M, Gage SH. 1998. Arrival, establishment, and habitat use of the multicolored Asian lady beetle (Coleoptera: Coccinellidae) in a Michigan landscape. Environ. Entomol. 27:1574-80
18. Cresswell AS. 1999. Aspects of target and non-target host selection by the parasitoid Microctonus aethiopoides Loan (Hymenoptera: Braconidae). M.S. thesis, Univ. Otago, Dunedin, New Zealand. 126 pp.
19. Culver JJ. 1919. A study of Compsilura concinnata, an imported tachinid parasite of the gipsy moth and brown-tail moth. Bull. 766. Washington, DC: U.S. Dep. Agric.
20. Davis CJ. 1964. The introduction, propagation, liberation, and establishment of parasites to control Nezara viridula variety smaragdula (Fabricius) in Hawaii (Heteroptera: Pentatomidae). Proc. Hawaii. Entomol. Soc. 18:369-75
21. Day WH, Prokrym DR, Ellis DR, Chianese RJ. 1994. The known distribution of the predator Propylea quatuordecimpunctata (Coleoptera: Coccinellidae) in the United States, and thoughts on the origin of this species and five other exotic lady beetles in eastern North America. Entomol. News 105:244-56
22. Delfosse ES, ed. 1985. Proceedings of the 6th International Symposium on the Biological Control of Weeds, 19-25 August 1984. Ottawa: Can.: Agric. Can.
23. Dodd AP. 1940. The Biological Campaign Against Prickly Pear. Brisbane, Aust.: Commonw. Prickly Pear Board. 177 pp.
24. Duan JJ, Messing RH. 1998. Effect of Tetrastichus giffardianus (Hymenoptera: Eulophidae) on non-target flowerhead-feeding tephritids (Diptera: Tephritidae). Environ. Entomol. 27:1022-28
25. Duan JJ, Messing RH. 1999. Effects of origin and experience on patterns of host acceptance by the Opiine parasitoid Diachasmimorpha tryoni. Ecol. Entomol. 24:284-91
26. Duan JJ, Messing RH. 1999. Evaluating nontarget effects of classical biological control: fruit fly parasitoids in Hawaii as a case study. See Ref. 36, pp. 95-109
27. Duan JJ, Messing RH. 2000. Effect of Diachasmimorpha tryoni on two non-target flowerhead-feeding tephritids. BioControl 45:113-25
28. Duan JJ, Messing RH. 2000. Host specificity tests of Diachasmimorpha kraussii (Hymenoptera: Braconidae), a newly introduced opiine fly parasitoid with four non-target tephritids in Hawaii. Biol. Control 19:28-34
29. Duan JJ, Purcell MF, Messing RH. 1996. Parasitoids of non-target tephritid flies in Hawaii: implications for biological control of fruit fly pests. Entomophaga 41:245-56
30. Duan JJ, Purcell MF, Messing RH. 1998. Association of the Opiine parasitoid Diachasmimorpha tryoni (Hymenoptera: Braconidae) with the lantana gall fly (Diptera: Tephritidae) on Kauai. Environ. Entomol. 27:419-26
31. Ehler LE. 1999. Critical issues related to nontarget effects in classical biological control of insects. See Ref. 36, pp. 3-13
32. Elliott NC, Kieckhefer RW, Kauffman WC. 1996. Effects of an invading coccinellid on native coccinellids in an agricultural landscape. Oecologia 105:537-44
33. Evans EW 1991. Intra versus interspecific interactions among lady beetles (Coleoptera: Coccinellidae) attacking aphids. Oecologia 87:401-8
34. Evans EW. 2000. Morphology of invasion: body size patterns associated with the establishment of Coccinella septempunctata in western North America. Eur. J. Entomol. 97:469-74
35. Evans EW, England S. 1996. Indirect interactions in biological control of insects: pests and natural enemies in alfalfa. Ecol. Appl. 920-30
36. Follett P, Duan J. 1999. Nontarget Effects of Biological Control. Dortrecht/Boston/London: Kluwer. 316pp.
37. Follett PA, Duan JJ, Messing RH, Jones VP. 2000. Parasitoid drift after biological control introductions: re-examining Pandora's box. Am. Entomol. 46:82-94
38. Frank JH. 1998. How risky is biological control? Comment. Ecology 79:1829-34
39. Funasaki GY, Lai P-Y, Nakahara LM, Beardsley JW, Ota AK. 1988. A review of biological control introductions in Hawaii: 1890-1985. Proc. Hawaii. Entomol. Soc. 28:105-60
40. Gagne WC, Howarth FG. 1985. Conservation status of endemic Hawaiian Lepidoptera. Proc. 3rd Congr. Eur. Lepidopterol., Cambridge UK, ed. J Heath, pp. 74-84. Karlsruhe, Germany: Soc. Eur. Lepidopterogica
41. Gassmann A, Louda SM. 2001. Rhinocyllus conicus: initial evaluation and subsequent ecological impacts in North America. See Ref. 129, pp. 147-83
42. Goeden RD, Ricker DW. 1987. Phytophagous insect faunas of native Cirsium thistles, C. mohavense, C. neomexicanum, and C. nidulum, in the Mojave Desert of southern California. Ann. Entomol. Soc. Am. 80:161-75
43. Goldson SL, McNeill MR, Phillips CB, Barratt BIP. 1992. Host specificity testing and suitability of the parasitoid Microctonus aethiopoides (Hym: Braconidae) as a biological control agent of Listronotus bonariensis (Col.: Curculionidae) in New Zealand. Entomophaga 37:483-98
44. Goldson SL, McNeill MR, Proffitt GM, Barker GM, Addison PJ, et al. 1993. Systematic mass rearing and release of Microctonus hyperodae (Hym.: Braconidae, Euphorinae), a parasitoid of the Argentine stem weevil Listronotus bonariensis (Col.: Curculionidae) and records of its establishment in New Zealand. Entomophaga 38:1-10
45. Gordon RD, Vandenberg N. 1991. Field guide to recently introduced species of Coccinellidae (Coleoptera) in North America, with a revised key to North American genera of Coccellini. Proc. Entomol. Soc. Wash. 93:845-64
46. Gould F. 1979. Rapid host range evolution in a population of the phytophagous mite Tetranychus urticae Koch. Evolution 33:791-802
47. Gould F. 1988. Genetics of pairwise and multispecies plant-herbivore coevolution. In Chemical Mediation of Coevolution, ed. KC Spencer, pp. 13-55. New York: Academic
48. Gould F. 1991. The evolutionary potential of crop pests. Am. Sci. 79:496-507
49. Greathead DJ, Greathead AH. 1992. Biological control of insect pests by insect parasitoids and predators: the BIOCAT database. Biocontrol News Inform. 13:61-68
50. Hall RW, Ehler LE. 1979. Rate of establishment of natural enemies in classical biological control. Bull. Entomol. Soc. Am. 25:280-82
51. Hall S, Sullivan P, Schweitzer DF. 2000. Assessment of Risk to Non-Target Macro-Moths after Btk Application to Asian Gypsy Moth in the Cape Fear Region of North Carolina. Washington, DC: U.S. Dep. Agric.
52. Harris VE, Todd JW. 1980. Male-mediated aggregation of male, female, and 5th instar southern green stink bugs and concomitant attraction of a tachinid parasite, Trichopoda pennipes. Entomol. Exp. Appl. 27:117-26
53. Hawaii Department of Agriculture. 1983. List of biological control introductions in Hawaii. Hawaii Dep. Agric., Plant Quar. Off., Honolulu, HI. Unpublished report
54. Hawkins BA, Marino PC. 1997. The colonization of native phytophagous insects in North America by exotic parasitoids. Oecologia 112:566-71
55. Henneman ML, Memmott J. 2001. Infiltration of a Hawaiian community by introduced biological control agents. Science 293:1314-16
56. Hodek I, Honek A. 1996. Ecology of Coccinellidae. Dordrecht, The Netherlands: Kluwer
57. Holt RD, Hochberg ME. 2001. Indirect interactions, community modules and biological control: a theoretical perspective. See Ref. 129, pp. 13-37
58. Holt RD, Pickering J. 1985. Infectious disease and species coexistence: a model of Lotka-Volterra form. Am. Nat. 126:196-211
59. Horn D. 1991. Potential impact of Coccinella septempunctata on endangered Lycaenidae (Lepidoptera) in northwestern Ohio, USA. In Behavior and Impact of Aphidophaga, ed. L Polgar, RJ Chambers, AFG Dixon, I Hodek, pp. 159-62. The Hague: SPB Acad. Publ.
60. Howarth FG. 1983. Classical biocontrol: panacea or Pandora's box? Proc. Hawaii. Entomol. Soc. 24:239-44
61. Howarth FG. 1991. Environmental impacts of classical biological control. Annu. Rev. Entomol. 36:485-509
62. Huffaker CB. 1964. Fundamentals of biological weed control. In Control of Insect Pests and Weeds, ed. P DeBach, E Schlinger, pp. 74-117. London, UK: Chapman & Hall
63. Hunter CD. 1997. Suppliers of Beneficial Organisms in North America. Sacramento, CA: Calif. Environ. Prot. Agency
64. Johnson DM, Stiling PD. 1996. Host specificity of Cactoblastis cactorum (Lepidoptera: Pyralidae), an exotic Opuntia-feeding moth, in Florida. Environ. Entomol. 25:743-48
65. Johnson DM, Stiling PD. 1998. Distribution and dispersal of Cactoblastis cactorum (Lepidoptera: Pyralidae), an exotic Opuntia-feeding moth, in Florida. Fla. Entomol. 81:12-22
66. Julien MH, Griffiths MW. 1998. Biological Control of Weeds: A World Catalogue of Agents and Their Target Weeds. Wallingford, UK: CAB Int.
67. Loan CC, Lloyd DC. 1974. Description and field biology of Microctonus hyperodae Loan n. sp. (Hymenoptera: Braconidae, Eurphorinae) a parasite of Hyperodes bonariensis in South America (Coleoptera: Curculionidae). Entomophaga 19:7-12
68. Louda SM. 1998. Population growth of Rhinocyllus conicus (Coleoptera: Curculionidae) on two species of native thistles in prairie. Environ. Entomol. 27:834-41
69. Louda SM. 1999. Ecology of interactions needed in biological control practice and policy. Bull. Br. Ecol. Soc. 29:8-11
70. Louda SM. 1999. Negative ecological effects of the musk thistle biocontrol agent, Rhinocyllus conicus Fröl. See Ref. 36, pp. 215-43
71. Louda SM. 2000. Rhinocyllus conicus - insights to improve predictability and minimize risk of biological control of weeds. See Ref. 118, pp. 187-93
72. Louda SM, Arnett AE. 2000. Predicting non-target ecological effects of biological control agents: evidence from Rhinocyllus conicus. See Ref. 118, pp. 551-67
73. Louda SM, Arnett AE, Rand TA, Russell FL. 2003. Fighting fire with fire: invasiveness of some biological control insects challenges adequacy of ecological risk assessment and regulation. Conserv. Biol. 17: In press
74. Louda SM, Kendall D, Connor J, Simberloff D. 1997. Ecological effects of an insect introduced for the biological control of weeds. Science 277:1088-90
75. Louda SM, O'Brien CW. 2002. Unexpected ecological effects of distributing the exotic weevil, Larinus planus (F.), for the biological control of Canada thistle. Conserv. Biol. 16:717-27
76. Louda SM, Potvin MA. 1995. Effect of inflorescence-feeding insects in the demography and lifetime fitness of a native plant. Ecology 76:229-45
77. Louda SM, Simberloff D, Boettner G, Connor J, Kendall D, Arnett AE. 1998. Insights from data on the nontarget effects of the flowerhead weevil. Biocontrol News Inform. 26:70N-71N
78. Lynch LD, Hokkanen HMT, Babendreier D, Bigler F, Burgio G, et al. 2001. Insect biological control and non-target effects: a European perspective. See Ref. 129, pp. 99-125
79. Lynch LD, Thomas MB. 2000. Nontarget effects in the biological control of insects with insects, nematodes and microbial agents: the evidence. Biocontrol News Inform. 21:117-30
80. MacFadyen RE. 1998. Biological control of weeds. Annu. Rev. Entomol. 43:369-93
81. Marohasy J. 1998. The design and interpretation of host-specificity tests for weed biological control with particular reference to insect behavior. Biocontrol News Inform. 19:13N-20N
82. McClay AS. 1990. The potential of Larinus planus (Coleoptera: Curculionidae), an accidentally-introduced insect in North America, for biological control of Cirsium arvense. Proc. 7th Int. Symp. Biol. Control Weeds, 6-11 March 1988, ed. ES Delfosse, pp. 173-79. Rome, Italy: Inst. Sper. Patol. Veg.
83. McEvoy PB. 1996. Host specificity and biological pest control. BioScience 46:401-5
84. McEvoy PB, Coombs EM. 1999. A parsimonious approach to biological control of plant invaders. Ecol. Appl. 9:387-401
85. McEvoy PB, Coombs EM. 1999. Why things bite back: unintended consequences of biological weed control. See Ref. 36, pp. 167-94
86. Miller M, Aplet G. 1993. Biological control: a little knowledge is a dangerous thing. Rutgers Law Rev. 45:285-334
87. Nalepa CA, Ahlstrom KR, Nault BA, Williams JL. 1998. Mass appearance of lady beetles (Coleoptera: Coccinellidae) on North Carolina beaches. Entomol. News 109:277-81
88. Newell IM, Haramoto FH. 1968. Biotic factors influencing populations of Dacus dorsalis in Hawaii. Proc. Hawaii. Entomol. Soc. 20:81-139
89. Obrycki JJ, Bailey WC, Stoltenow CR, Puttler B, Carlson CE. 1987. Recovery of the sevenspotted lady beetle Coccinella septempunctata (Coleoptera: Coccinellidae) in Iowa and Missouri. J. Kans. Entomol. Soc. 60:584-88
90. Obrycki JJ, Elliott NC, Giles LL. 1999. Coccinellid introductions: potential for evaluation of nontarget effects. See Ref. 36, pp. 127-45
91. Obrycki JJ, Giles KL, Ormond AM. 1998. Experimental assessment of interactions between larval Coleomegilla maculata and Coccinella septempunctata (Coleoptera: Coccinellidae) in field cages. Environ. Entomol. 27:1280-88
92. Obrycki JJ, Giles KL, Ormord AM. 1998. Interactions between an introduced and indigenous coccinellid species at different prey densities. Oecologia 117:279-85
93. Office of Technology Assessment, Congress of the US. 1995. Biologically Based Technologies for Pest Control. Washington, DC: U.S. Gov. Printing Off.
94. Onstad DW, McManus ML. 1996. Risks of host range expansion by parasites of insects. BioScience 46:430-35
95. Pearson DE, McKelvey KS, Ruggiero LF. 2000. Non-target effects of an introduced biological control agent on deer mouse ecology. Oecologia 122:121-28
96. Pemberton RW. 1985. Native plant considerations in the biological control of leafy spurge. See Ref. 22, pp. 365-90
97. Pemberton RW. 1985. Native weeds as candidates for biological control research. See Ref. 22, pp. 869-77
98. Pemberton RW. 1995. Cactoblastis cactorum (Lepidoptera: Pyralidae) in the United States: an immigrant biological control agent or an introduction of the nursery industry? Am. Entomol. 41:230-32
99. Pemberton RW. 2000. Predictable risk to native plants in weed biological control. Oecologia 125:489-94
100. Pemberton RW. 2000. Safety data crucial for biological control insect agents. Science 290:1896-97
101. Prokrym DR, Pike KS, Nelson DJ. 1998. Biological control of Diuraphis noxia (Homoptera: Aphididae): implementation and evaluation of natural enemies. In Response Model for an Introduced Pest: The Russian Wheat Aphid, ed. SS Quisenberry, FB Peairs, pp. 183-208. Lanham, MD: ESA
102. Rees NE. 1977. Impact of Rhinocyllus conicus on thistles in southwestern Montana. Environ. Entomol. 6:839-42
103. Schaefer PW, Dysart RJ, Specht HB. 1987. North American distribution of Coccinella septempunctata (Coleoptera: Coccinellidae) and its mass appearance in coastal Delaware. Environ. Entomol. 16:368-73
104. Schaffner JV, Griswold CL. 1934. Macrolepidoptera and Their Parasites Reared from Field Collections in the Northeastern Part of the United States. Publ. 188. Washington, DC: U.S. Dep. Agric.
105. Schreiner IH, Nafus DM. 1992. Changes in a moth community mediated by biological control of the dominant species. Environ. Entomol. 21:664-68
106. Schweitzer DF. 1988. Status of Saturniidae in the northeastern USA: a quick review. News Lepidopt. Soc. 1:4-5
107. Scudder SH. 1889. The Butterflies of the Eastern United States and Canada with Special Reference to New England. Cambridge, MA: Privately published. 1775 pp.
108. Secord D, Kareiva P. 1996. Perils and pitfalls in the host specificity paradigm. BioScience 46:448-53
109. Shapiro AM. 1974. Butterflies and skippers of New York State. Search Agric. (Entomol.) 4:1, 20-1, 49
110. Sheppard AW, Woodburn T. 1996. Population regulation in insects used to control thistles: can this predict effectiveness? In Frontiers of Population Ecology, ed. RB Floyd, AW Sheppard, PJ De Barro, pp. 277-90. Melbourne, Aust.: CSIRO
111. Simberloff D. 1981. Community effects of introduced species. In Biotic Crises in Ecological and Evolutionary Time, ed. TH Nitecki, pp. 53-81. New York, NY: Academic
112. Simberloff D. 1991. Keystone species and community effects of biological introductions. In Assessing Ecological Risks of Biotechnology, ed. L Ginzburg, pp. 1-19. Boston: Butterworth-Heinemann
113. Simberloff D. 1992. Conservation of pristine habitats and unintended effects of biological control. In Selection Criteria and Ecological Consequences of Importing Natural Enemies, ed. WC Kauffman, JE Nechols, pp. 103-17. Lanham, MD: ESA
114. Simberloff D, Stiling P. 1996. How risky is biological control? Ecology 77:1965-74
115. Simberloff D, Stiling P. 1998. How risky is biological control? Reply. Ecology 79:1834-36
116. Simmonds FJ, Bennett FD. 1966. Biological control of Opuntia spp. by Cactoblastis cactorum in the Leeward Islands (West Indies). Entomophaga 11:183-89
117. Singer MC, Ng D, Vasco D, Thomas CD. 1992. Rapidly evolving associations among oviposition preferences fail to constrain evolution of insect diet. Am. Nat. 139:9-20
118. Spencer NR, ed. 2000. Proceedings of the 10th International Symposium on the Biological Control of Weeds, 4-14 July 1999. Bozeman, MT: Montana State Univ.
119. Stamp NE, Bowers MD. 1990. Parasitism of New England buckmoth caterpillars (Hemileuca lucina: Saturniidae) by tachinid flies. J. Lepidopt. Soc. 35:199-200
120. Sternberg JG, Waldbauer GP, Scarborough AG. 1981. Distribution of Cecropia moth (Saturniidae) in central Illinois: a study in urban ecology. J. Lepidopt. Soc. 35:304-20
121. Stiling P, Simberloff D. 1999. The frequency and strength of non-target effects of invertebrate biological control agents. See Ref. 36, pp. 31-43
122. Strong DR, Pemberton RW. 2000. Biological control of invading species - risk and reform. Science 288:169-79
123. Strong DR, Pemberton RW. 2001. Food webs, risks of alien enemies, and reform of biological control. See Ref. 129, pp. 57-79
124. Thomas MB, Willis AJ. 1998. Biocontrol - risky but necessary? Trends Ecol. Evol. 13:325-29
125. Turner CE. 1985. Conflicting interests and biological control of weeds. See Ref. 22, pp. 203-25
126. Turner CE, Pemberton RW, Rosenthal SS. 1987. Host utilization of native Cirsium thistles (Asteraceae) by the introduced weevil Rhinocyllus conicus (Coleoptera: Curculionidae) in California. Environ. Entomol. 16:111-15
127. Tuskes PM, Tuttle JP, Collins MM. 1996. The Wild Silkmoths of North America: A Natural History of the Saturniidae of the United States and Canada. Ithaca, NY: Cornell Univ. Press. 250 pp.
128. Villegas B. 2001. Thistle control projects. In Biological Control Program Annual Summary, 2000, ed. DM Woods, pp. 76-77. Sacramento, CA: Calif. Dep. Food Agric., Plant Health Pest Prev. Serv.
129. Wajnberg E, Scott JK, Quimby PC. 2001. Evaluating Indirect Ecological Effects of Biological Control. Wallingford, Oxon, UK: CABI. 261 pp.
130. Webber RT, Schaffner JV. 1926. Host Relations of Compsilura concinnata Meigen, An Important Tachinid Parasite of the Gipsy Moth and Brown-Tail Moth. Bull. 1363. Washington, DC: U.S. Dep. Agric.
131. Weber WA. 1987. Colorado Flora: Western Slope. Boulder, CO: Colorado Assoc. Univ. Press
132. Weseloh RW. 1982. Implications of tree microhabitat preferences of Compsilura concinnata (Diptera: Tachinidae) for its effectiveness as a gypsy moth parasitoid. Can. Entomol. 114:617-22
133. Wharton RA. 1989. Classical biological control of fruit infesting Tephritidae. In World Crop Pests: Fruit Flies - Their Biology, Natural Enemies, and Control, ed. AS Robinson, G Hooper,pp. 303-13. Amsterdam: Elsevier
134. Wheeler AG Jr, Hoebeke ER. 1995. Coccinella novemnotata in northeastern North America: historical occurrence and current status (Coleoptera: Coccinellidae). Proc. Entomol. Soc. Wash. 97:701-16
135. White JC. 1972. A European weevil, Larinus carolinae Oliver, collected in Maryland. Coop. Econ. Insect Rep. 22:418
136. Williamson M, Fitter A. 1996. The varying success of invaders. Ecology 77:1661-66
137. Wraight SP, Poprawski TJ, Meyer WL, Peairs FB. 1993. Natural enemies of Russian wheat aphid (Homoptera: Aphididae) and associated cereal aphid species in spring-planted wheat and barley in Colorado. Environ. Entomol. 22:1383-91
138. Zimmerman EC. 1978. Insects of Hawaii. Honolulu, HI: Univ. Hawaii Press
139. Zimmermann HG, Moran VC, Hoffmann J. 2001. The renowned cactus moth, Cactoblastis cactorum (Lepidoptera: Pyralidae): its natural history and threat to native Opuntia floras in Mexico and the United States of America. Fla. Entomol. 84:543-51
140. Zwölfer H, Frick KE, Andres LA. 1971. A study of the host plant relationships of European members of the genus Larinus (Col.: Curculionidae). Commonw. Inst. Biol. Control Tech. Bull. 14:97-143
141. Zwölfer H, Harris P. 1984. Biology and host specificity of Rhinocyllus conicus (Froel.) (Col.: Curculionidae), a successful agent for biocontrol of the thistle, Carduus nutans L. Z. Ang. Entomol. 97:36-62