Insecticide Resistance and Resistance Management

Resistance to Pyrethroids and DDT in a Field-Mixed Population of Argentinean Black Flies (Diptera: Simuliidae).
Cristina M. Montagna, Olga L. Anguiano, Lidia E. Gauna, and Ana M. Pechen De D'Angelo …. 1243

Detection of Resistance to Pyrethroids in Field Populations of Cotton Jassid (Homoptera: Cicadellidae) from Pakistan.
Mushtaq Ahmad, M. Iqbal Arif, and Zahoor Ahmad …. 1246 

Susceptibility of Obliquebanded Leafroller (Lepidoptera: Tortricidae) Populations from Commercial Apple Orchards and an Unsprayed Habitat in New York to Tebufenozide.
D. E. Waldstein, W. H. Reissig, J. G. Scott, and R. W. Straub ….1251 

Economic Analysis of Transgenic Maize and Nontransgenic Refuges for Managing European Corn Borer (Lepidoptera: Pyralidae).
David W. Onstad and Charles A. Guse …. 1256 

Ecotoxicology 

Effects of SpinTor (Spinosad) on Cabbage Looper (Lepidoptera: Noctuidae): Toxicity and Persistence of Leaf Residue on Cabbage Under Field and Laboratory Conditions.
Tong-Xian Liu, Alton N. Sparks, Jr., William H. Hendrix III, and Bisong Yue …. 1266 

Biological Effects of Neem (Azadirachta indica) Seed Oil on an Egg Parasitoid, Trichogramma chilonis.
S. Raguraman and R. P. Singh …. 1274 

Toxicity of Neem Applied Alone and in Combinations with Bacillus thuringiensis to Colorado Potato Beetle (Coleoptera: Chrysomelidae).
Andi Trisyono and Mark E. Whalon …. 1281 

Biological and Microbial Control 

Median Lethal Concentration and Efficacy of Bacillus Thuringiensis Against Banded Sunflower Moth (Lepidoptera: Tortricidae).
Jawahar L. Jyoti and Gary J. Brewer …. 1289 

Suitability of Listronotus maculicollis (Coleoptera: Curculionidae) as a Host for Microctonus hyperodae(Hymenoptera: Braconidae).
Mark R. McNeill, Patricia J. Vittum, and David B. Baird …. 1292 

Ecology and Behavior 

Population Characteristics of a Western Corn Rootworm (Coleoptera: Chrysomelidae) Strain in East-Central Illinois Corn and Soybean Fields.
Matthew E. O'Neal, Michael E. Gray, and Charles A. Smyth …. 1301 

Host Density-Dependence of Discovery and Exploitation Rates of Egg Patches of Lobesia botrana(Lepidoptera: Tortricidae) and Ephestia kuehniella (Lepidoptera: Pyralidae) by the ParasitoidTrichogramma cacoeciae (Hymenoptera: Trichogrammatidae).
O. Barnay, J. Pizzol, C. Gertz, J. C. Kienlen, G. Hommay, and L. Lapchin …. 1311 

Diel Settling Patterns of Female and Male Potato Leafhoppers (Homoptera: Cicadellidae) on Alfalfa.
Ned M. Gruenhagen and Elaine A. Backus …. 1321 

Larval Survival and Movement of Bluegrass Webworm in Mixed Stands of Endophytic Perennial Ryegrass and Kentucky Bluegrass.
Douglas S. Richmond and David J. Shetlar …. 1329 

Sampling and Biostatistics 

Binomial Sequential Sampling Plans for Adult Female Twospotted Spider Mites (Acari: Tetranychidae) on Hops.
Lawrence C. Wright and Wyatt W. Cone …. 1335 

Horticultural Entomology 

Toxicity of the Ecdysone Agonist Tebufenozide to Codling Moth (Lepidoptera: Tortricidae).
Sebasti Pons, Helmut Riedl, and Jess Avilla …. 1344 

Stable Fly, House Fly (Diptera: Muscidae), and Other Nuisance Fly Development in Poultry Litter Associated with Horticultural Crop Production.
D. F. Cook, I. R. Dadour, and N. J. Keals …. 1352 

Oviposition Patterns of the Strawberry Bud Weevil (Coleoptera: Curculionidae) at Two Spatial Scales and Implications for Management.
Joseph Kovach, Regina Rieckenberg, Greg English-Loeb, and Marvin Pritts …. 1358 

Field And Forage Crops 

Efficacy and Degradation of Fipronil Applied to Cotton for Control of Anthonomus grandis grandis(Coleoptera: Curculionidae).
Joseph E. Mulrooney and Deepa Goli …. 1364 

Stored-Product and Quarantine Entomology 

Toxic Effects of a Lactone-Containing Fraction of Cyrtocymura cincta (Asteraceae) on Sitotroga cerealella (Lepidoptera: Gelechiidae).
Alicia Bardn, Susana Popich, Diego Alvarez Valds, and Csar A. N. Cataln …. 1369 

Gamma Irradiation Quarantine Treatment Against Blueberry Maggot and Apple Maggot (Diptera: Tephritidae).
Guy J. Hallman and Donald B. Thomas …. 1373 

Plant Resistance 

Quantification of Bacillus thuringiensis Insect Control Protein Cry1Ac Over Time in Bollgard Cotton Fruit and Terminals.
John T. Greenplate …. 1377 

Veterinary Entomology 

Efficacy of Coumaphos Applied as a Dip for Control of an Organophosphorus-Resistant Strain ofBoophilus microplus (Acari: Ixodidae) on Cattle
Ronald B. Davey and John E. George …. 1384 

1999 Cumulative Author Index …. 1396 

1999 Cumulative Subject Index …. 1401