Pest Management and Sampling

Population Dynamics of Whitefringed Beetle (Coleoptera: Curculionidae) on Sweet Potato in Alabama.
Geoffrey W. Zehnder 727

Projection Pursuit Nonparametric Regression Used for Predicting Insect Densities from Visual Abundance Classes.
Laurent Lapchin, Roger Boll, Jacques Rochat, Anne-Marie Geria, and Emile Franco 736

Forage Grasses Elicit Emigration of Adult Potato Leafhopper (Homoptera: Cicadellidae) from Alfalfa—Grass Mixtures.
A. L. Roda, D. A. Landis, and M. L. Coggins 745

Contact-Induced Emigration of Potato Leafhopper (Homoptera: Cicadellidae) from Alfalfa—Forage Grass Mixtures.
A. L. Roda, D. A. Landis, and J. R. Miller 754

Pesticide Effect on Faunal Composition, Abundance, and Body Length of Spiders (Araneae) in Apple Orchards.
Joanna Wisniewska and Ronald J. Prokopy 763

Sampling Whiteflies in Cotton: Validation and Analysis of Enumerative and Binomial Plans.
Steven E. Naranjo, Jonathan W. Diehl, and Peter C. Ellsworth 777

Community and Ecosystem Ecology

Scavenging Behavior of Rangeland Grasshoppers (Orthoptera: Acrididae): Rubidium-Label Studies.
Stephen A. Woods, Kevin M. O'Neill, and Douglas A. Streett 789

Response of an Assemblage of Coccinellidae (Coleoptera) to a Diverse Agricultural Landscape.
Manuel Colunga-Garcia, Stuart H. Gage, and Douglas A. Landis 797

Analysis of Spatial and Seasonal Variability of Carrion Beetle (Coleoptera) Assemblages in Two Arid Zones of Spain.
Francisco Sanchez PiZero 805

Dynamics of the Common Green Lacewing (Neuroptera: Chrysopidae) in Israeli Cotton Fields in Relation to Whitefly (Homoptera: Aleyrodidae) Populations.
Dan Gerling, Vasily Kravchenko, and Michael Lazare 815

Aquatic Insects Associated with Anopheles albimanus (Diptera: Culicidae) Breeding Sites in Southern Mexico. 
Rogelio Danis-Lozano, Mario H. Rodriguez, Juan I. Arredondo-Jimenez, Mauricio Hernandez-Avila, and Cristina Mallorca 828

Population Ecology

Comparative Biology and Susceptibility of Cabbage Looper (Lepidoptera: Noctuidae) Lines to a Nuclear Polyhedrosis Virus.
Maynard L. Milks 839

Interaction of Erwinia tracheiphila and Muskmelon Plants.
Gerald E. Brust 850

Conophthorus ponderosae (Coleoptera: Scolytidae) Infesting Lodgepole Pine Cones in Idaho.
Malcolm M. Furniss 856

Spatial Aggregation and Refugia of the Mites Tetranychus urticae and Neoseiulus fallacis (Acari: Tetranychidae, Phytoseiidae) on Hop. 
W. B. Strong, B. A Croft, and D. H. Slone 860

Diuraphis noxia (Homoptera: Aphididae) Population Dynamics and Impact of Natural Enemies in the Montpellier Region of Southern France.
K. Chen and K. R. Hopper 867

Field Studies on the Reproductive Capacity and Development of Cassida rubiginosa (Coleoptera: Chrysomelidae) on Musk and Canada Thistles.
Alexandra Spring and L. T. Kok 877

Prevalence and Persistence of Nuclear Polyhedrosis Virus in Fluctuating Populations of Forest Tent Caterpillars (Lepidoptera: Lasiocampidae) in the Area of Prince George, British Columbia.
Barbara Kukan and Judith H. Myers 883

White Pine Weevil (Coleoptera: Curculionidae) Attack on White Spruce: Spatial and Temporal Patterns.
Fangliang He and RenJ I. Alfaro 889

Physiological and Chemical Ecology

Polyethylene Dispensers Generate Large-Scale Temporal Fluctuations in Pheromone Concentration.
G. Karg and D. M. Suckling 897

Embryonic Diapause in Aulocara elliotti and Ageneotettix deorum (Orthoptera: Acrididae): Low-Temperature Relationships.
James R. Fisher 907

Feeding Deterrence of Spodoptera exigua (Lepidoptera: Noctuidae) Larvae by Low Concentrations of Linear Furanocoumarins.
Mariano BerdeguJ, Kristina K. White, and John T. Trumble 913

Intensity and Site of Plagiorchis elegans (Trematoda: Plagiorchiidae) Infections in Aedes aegypti (Diptera: Culicidae) Larvae Affect the Attractiveness of Their Waters to Ovipositing, Conspecific Females.
Nayer Zahiri, Manfred E. Rau, David J. Lewis, and Shahrokh Khanizadeh 921

Biological Control

Influence of Noncrop Habitats on the Distribution of Eriborus terebrans (Hymenoptera: Ichneumonidae) in Cornfields.
Lawrence E. Dyer and Douglas A. Landis 926

Suitability of Yponomeuta malinellus and Y. cagnagellus (Lepidoptera: Yponomeutidae) as Hosts of Diadegma armillata (Hymenoptera: Ichneumonidae).
Franck HJrard and GeneviPve PrJvost 935

Combined Effect of Sublethal Exposure to Cotton Expressing the Endotoxin Protein of Bacillus thuringiensis and Natural Enemies on Survival of Bollworm (Lepidoptera: Noctuidae) Larvae.
V. J. Mascarenhas and R. G. Luttrell 941

Factors Affecting Dispersal of Perillus bioculatus (Hemiptera: Pentatomidae), a Predator of the Colorado Potato Beetle (Coleoptera: Chrysomelidae).
Simon LaChance and Conrad Cloutier 948

Effect of Viral Concentration and Body Weight on Mortality of Larvae of Trichoplusia ni (Lepidoptera: Noctuidae) Exposed to Wild-Type or Recombinant Strains of the Nuclear Polyhedrosis Virus of Autographa californica (Lepidoptera: Noctuidae).
C. M. Ignoffo and C. Garcia 957

Effect of Artificial Diet on Longevity of Adult Parasitoids of Dendroctonus frontalis (Coleoptera: Scolytidae).
Patrick L. Mathews and Frederick M. Stephen 963

Host Plant Preference, Consumption, Growth, Development, and Survival of Tyta luctuosa (Lepidoptera: Noctuidae) on Biotypes of Field Bindweed and Hedge Bindweed.
Dennis J. Chessman, Michael J. Horak, and James R. Nechols 968

Susceptibility of Anticarsia gemmatalis (Lepidoptera: Noctuidae), Reared on Four Host Plants, to a Nuclear Polyhedrosis Virus.
F. Peng, J. R. Fuxa, S. J. Johnson, and A. R. Richter 975

Variation in the Life History of the Citrus Mealybug Parasitoid Leptomastix dactylopii (Hymenoptera: Encyrtidae) on Three Varieties of Coleus blumei.
Jinsong Yang and Clifford S. Sadof 980

Coleomegilla maculata, Coccinella septempunctata (Coleoptera: Coccinellidae), Chrysoperla carnea (Neuroptera: Chrysopidae), and Macrocentrus grandii (Hymenoptera: Braconidae) Trapped on Colored Sticky Traps in Corn Habitats.
Sujaya Udayagiri, Charles E. Mason, and John D. Pesek, Jr. 985

Responses of Female Aphelinus asychis (Hymenoptera: Aphelinidae) and Aphidius matricariae (Hymenoptera: Aphidiidae) to Host and Plant-Host Odors.
Angela M. I. De Farias and Keith R. Hopper 991