Physiological and Chemical Ecology

Behavioral and Biochemical Adaptations of Generalist and Specialist Herbivorous Insects Feeding on Hypericum perforatum (Guttiferae). 
G. Guillet, C. Podeszfinski, C. Regnault-Roger, J. T. Arnason, and B.J.R. Philogene . . . . 135

Effect of Root Extracts of Mexican Marigold, Tagetes minuta (Asterales: Asteraceae), on Six Nontarget Aquatic Macroinvertebrates. 
Anuj Kumar, Florence V. Dunkel, Matthew J. Broughton, and Shobha Sriharan . . . . 140 

Thermal Requirements for Development of Diaprepes abbreviatus (Coleoptera: Curculionidae). 
Stephen L. Lapointe . . . . 150

Cold Tolerance of Overwintering Bean Leaf Beetles (Coleoptera: Chrysomelidae). 
Wai-Ki F. Lam and Larry P. Pedigo . . . . 157

Oviposition Response of Spruce Budworm (Lepidoptera: Tortricidae) to Aliphatic Carboxylic Acids. 
G. G. Grant, B. Zhao, and D. Langevin . . . . 164

Population and Community Ecology

Feeding Damage of the Introduced Leafhopper Sophonia rufofascia (Homoptera: Cicadellidae) to Plants in Forests and Watersheds of the Hawaiian Islands. 
Vincent P. Jones, Puanani Anderson-Wong, Peter A. Follett, Pingjun Yang, Daphne M. Westcot, John S. Hu, and Diane E. Ullman . . . . 171

Community and Ecosystem Ecology

Temporal and Spatial Variation in a Parasitoid Community Associated with the Herbivores That Feed on Missouri Quercus. 
J. Le Corff, R. J. Marquis, and J. B. Whitfield . . . . 181

Effect of Host Plant Quality on the Sex Ratio and Fitness of Female Wheat Stem Sawflies (Hymenoptera: Cephidae). 
Wendell L. Morrill, James W. Gabor, David K. Weaver, Gregory D. Kushnak, and Norma J. Irish . . . . 195

Ant (Hymenoptera: Formicidae) Responses to Environmental Stressors in the Northern Chihuahuan Desert. 
Maliha S. Nash, Walter G. Whitford, Justin Van Zee, and Kris M. Havstad . . . . 200

Population Ecology

Larval Substrates of Herminiine Noctuids (Lepidoptera): Macrodecomposers of Temperate Leaf Litter. 
F. M. Hohn and D. L. Wagner . . . . 207

Competition in Cereal Aphids (Homoptera: Aphididae) on Wheat Plants. 
E. Gianoli . . . . 213

Effect of Leaf Age and Silverleaf Symptoms on Oviposition Site Selection and Development of Bemisia argentifolii (Homoptera: Aleyrodidae) on Zucchini. 
Yasmin J. Cardoza, Heather J. McAuslane, and Susan E. Webb . . . . 220

Aerial Movement of Western Corn Rootworm (Coleoptera: Chrysomelidae): Diel Periodicity of Flight Activity in Soybean Fields. 
Scott A. Isard, Joseph L. Spencer, Mark A. Nasser, and Eli Levine . . . . 226

Pollinating Efficacy of Osmia cornuta and Apis mellifera (Hymenoptera: Megachilidae, Apidae) on `Red Delicious' Apple. 
Narcis Vicens and Jordi Bosch . . . . . 235

Size and Dispersion of Colonies of Reticulitermes spp. (Isoptera: Rhinotermitidae) in a Wildland and a Residential Location in Northern California. 
Michael I. Haverty, Gail M. Getty, Kirsten A. Copren, and Vernard R. Lewis . . . . 241

Susceptibility of Eight U.S. Wheat Cultivars to Infestation by Rhyzopertha dominica (Coleoptera: Bostrichidae). 
Michael D. Toews, Gerrit W. Cuperus, and Thomas W. Phillips . . . . 250

Nest Growth and Survivorship in Three Species of Neotropical Nasutitermes (Isoptera: Termitidae). 
Barbara L. Thorne and Michael I. Haverty . . . . 256

Temperature Effects on Development, Fecundity, and Life Table Parameters of Amblyseius womersleyi (Acari: Phytoseiidae). 
Joon-Ho Lee and Jeong Joon Ahn . . . . 265

Spatial and Temporal Variation in the Density of Ixodes pacificus (Acari: Ixodidae) Nymphs. 
Lars Talleklint-Eisen and Robert S. Lane . . . . 272

Oviposition Preference and Larval Performance of the Western Spruce Budworm (Lepidoptera: Tortricidae). 
Kathryn J. Leyva, Karen M. Clancy, and Peter W. Price . . . . 281

Altitudinal Variation in Body Size and Population Density of Nicrophorus investigator (Coleoptera: Silphidae). 
Rosemary J. Smith, Amy Hines, Stephanie Richmond, Melissa Merrick, Allison Drew, and Rachelle Fargo . . . . 290 

Host Pubescence and the Behavior and Performance of the Butterfly Papilio Troilus (Lepidoptera: Papilionidae). 
Nick M. Haddad and William M. Hicks . . . . 299

Survival and Development of Chrysoperla rufilabris (Neuroptera: Chrysopidae) Supplied with Pea Aphids (Homoptera: Aphididae) Reared on Alfalfa and Faba Bean. 
Kristopher L. Giles, Robin D. Madden, Mark E. Payton, and Jack W. Dillwith . . . . 304

Pest Management and Sampling

Arthropod Populations in Early Soybean Production Systems in the Mid-South. 
M. E. Baur, David J. Boethel, Michael L. Boyd, Glenn R. Bowers, M. O. Way, Larry G. Heatherly, James Rabb, and Lanny Ashlock . . . . 312

Progress Toward Liquid Formulations of Particle Films for Insect and Disease Control in Pear. 
Gary J. Puterka, D. Michael Glenn, Dennis G. Sekutowski, Tom R. Unruh, and Sharon K. Jones . . . . 329

Biological Control

Effects of Broad-Spectrum Insecticides on Epigeal Arthropod Biodiversity in Pacific Northwest Apple Orchards. 
D. L. Epstein, R. S. Zack, J. F. Brunner, L. Gut, and J. J. Brown . . . . 340

Use of Picloram to Enhance Establishment of Cyphocleonus achates (Coleoptera: Curculionidae). 
James S. Jacobs, Roger L. Sheley, and Jim M. Story . . . . 349

Classical Biological Control of the Mealybug Phenacoccus herreni (Hemiptera: Pseudococcidae) in Northeastern Brazil. 
J.M.S. Bento, G. J. de Morales, A. P. de Matos, and A. C. Bellotti . . . . 355

Abundance and Effects of Predators and Parasitoids on the Russian Wheat Aphid (Homoptera: Aphididae) Under Organic Farming Conditions in Colorado. 
Ahmed H. Mohamed, Philip J. Lester, and Thomas O. Holtzer . . . . 360

Classical Biological Control of the Australian Weevil Gonipterus scutellatus (Coleoptera: Curculionidae) in California. 
L. M. Hanks, J. G. Millar, T. D. Paine, and C. D. Campbell . . . . 369 

Predation of Frankliniella occidentalis (Thysanoptera: Thripidae) in Field Peppers by Orius insidiosus (Hemiptera: Anthocoridae). 
Joe Funderburk, Julianne Stavisky, and Steve Olson . . . . 376

Modular Habitat Refugia Enhance Generalist Predators and Lower Plant Damage in Soybeans. 
Juraj Halaj, Alan B. Cady, and George W. Uetz . . . . 383 

Effects of Beauveria bassiana on Lygus hesperus (Hemiptera: Miridae) Feeding and Oviposition. 
Takuji Noma and Karen Strickler . . . . 394 -