Forum

Quantifying Time-Mortality Relationships for Nuclear Polyhedrosis Viruses When Survivors are Present
Robert R. Farrar, Jr. and Richard L. Ridgway....1289

Physiological and Chemical Ecology

Relationship Between Cold Stupor and Cold Tolerance in Drosophila (Diptera: Drosophilidae)
Yuko Hori and Masahito T. Kimura....1297

Effects of Food Deprivation, Age, Time of Day, and Gamma Irradiation on Attraction of Mexican Fruit Flies (Diptera: Tephritidae) to Two Synthetic Lures in a Wind Tunnel
David C. Robacker....1303

Community and Ecosystem Ecology

Depth of Pupation and Survival of Fruit Fly (Anastrepha spp.: Tephritidae) Pupae in a Range of Agricultural Habitats
P. Jane Hodgson, John Sivinski, Gemma Quintero, and Martin Aluja....1310

Feeding Habits and Gut Fauna of Zootermopsis angusticollis (Isoptera: Termopsidae) in Response to Wood Species and Fungal Associates
M. E. Mankowski, T. D. Schowalter, J. J. Morrell, and B. Lyons ....1315

Reverting Conservation Reserve Program Lands to Wheat and Livestock Production: Effects on Ground Beetle (Coleoptera: Carabidae) Assemblages
B. Wade French, Norman C. Elliott, and Richard C. Berberet....1323

Spatial Distribution of Ataenius spretulus, Aphodius granarius (Coleoptera: Scarabaeidae), and Predaceous Insects Across Golf Course Fairways and Roughs
D. R. Smitley, T. W. Davis, and N. L. Rothwell....1336

Population Ecology

Host Preference and Performance of Bemisia argentifolii (Homoptera: Aleyrodidae) on Weeds in Central Italy
Maurizio Calvitti and Patrizio C. Remotti....1350

Mortality of Birch Leafmining Sawflies (Hymenoptera: Tenthredinidae): Impacts of Natural Enemies on Introduced Pests
Scott C. Digweed....1357

Budbreak Phenology and Natural Enemies Mediate Survival of First-Instar Forest Tent Caterpillar (Lepidoptera: Lasiocampidae)
Dylan Parry, John R. Spence, and W. Jan A. Volney....1368

Influence of a Native Weed, Acalypha ostryaefolia (Euphorbiaceae), on Coleomegilla maculata (Coleoptera: Coccinellidae) Population Density, Predation, and Cannibalism in Sweet Corn
Ted E. Cottrell and Kenneth V. Yeargan....1375

Establishment and Phenology of the Parasitoid Microctonus hyperodae (Hymenoptera: Braconidae) in New Zealand
Stephen L. Goldson, John R. Proffitt, and David B. Baird....1386

Effects of Mycangial Fungi and Host Tree Species on Progeny Survival and Emergence of Dendroctonus ponderosae (Coleoptera: Scolytidae)
D. L. Six and T. D. Paine....1393

Effect of Pollen on Coleomegilla maculata (Coleoptera: Coccinellidae) Population Density, Predation, and Cannibalism in Sweet Corn
Ted E. Cottrell and Kenneth V. Yeargan....1402

Forecasting Emergence, Flight, and Oviposition of Spilonota ocellana (Lepidoptera: Tortricidae), in British Columbia
H. L. Mcbrien and G. J. R. Judd....1411

Dispersal of the Eucalyptus Longhorned Borer (Coleoptera: Cerambycidae) in Urban Landscapes
Lawrence M. Hanks, Jocelyn G. Millar, and Timothy D. Paine....1418  

Potential Biotic Factors Influencing Settling of Trioza eugeniae Nymphs (Homoptera: Triozidae) on Young Foliage
P. A. Luft and T. D. Paine....1425

Effects of Japanese Cedar Inner Bark Nutritional Quality on Development of Semanotus japonicus (Coleoptera: Cerambycidae)
Ei'ichi Shibata....1431

Temporal Analysis of Western Flower Thrips (Thysanoptera: Thripidae) Population Dynamics on Reunion Island
Nathalie Boissot, Bernard Reynaud, and Philippe Letourmy....1437

Natural Enemy Abundance and Activity in a Maize-Leucaena Agroforestry System in Kenya
Callistus K.P.O. Ogol, John R. Spence, and Andrew Keddie....1444

Pest Management and Sampling

Relationship of Gypsy Moth (Lepidoptera: Lymantriidae) Egg Mass Age to Persistence and Color, and an Evaluation of Two Methods to Distinguish New and Old Egg Masses
Kevin W. Thorpe....1452

Development and Validation of a Fixed-Precision Sequential Sampling Plan for Aster Leafhopper (Homoptera: Cicadellidae) in Carrot
Patrick K. O'Rourke, Eric C. Burkness, and William D. Hutchison....1463

Effects of Environment and Host Genetics on Eucosma sonomana (Lepidoptera: Tortricidae) Infestation Levels
Sara C. Prueitt and Darrell W. Ross....1469

Efficacy of Maxforce Bait for Control of the Argentine Ant (Hymenoptera: Formicidae) in Haleakala National Park, Maui, Hawaii
Paul D. Krushelnycky and Neil J. Reimer....1473

Bait Preference by the Argentine Ant (Hymenoptera: Formicidae) in Haleakala National Park, Hawaii
Paul D Krushelnycky and Neil J. Reimer....1482

Biological Control

Influence of Soybean Canopy Closure on Predator Abundances and Predation on Helicoverpa zea (Lepidoptera: Noctuidae) Eggs
Aaron C. Anderson and Kenneth V. Yeargan....1488

Establishment and Spread of Typhlodromalus manihoti (Acari: Phytoseiidae), an Introduced Phytoseiid Predator of Mononychellus tanajoa (Acari: Tetranychidae) in Africa
J. S. Yaninek, B. Megevand, B. Ojo, A. R. Cudjoe, E. Abole, A. Onzo, and I. Zannou....1496

Impact of Temperature and Humidity on Host-Pathogen Interactions Between Beauveria bassiana and a Coccinellid
R. R. James, B. A. Croft, B. T. Shaffer, and B. Lighthart....1506

Susceptibility of House Fly (Diptera: Muscidae) Larvae to Entomopathogenic Nematodes (Rhabditida: Heterorhabditidae, Steinernematidae)
David B. Taylor, Allen L. Szalanski, Byron J. Adams, and Richard D. Peterson II....1514   

Oviposition Response of Cotesia plutellae (Hymenoptera: Braconidae) to Sterile and Normal Diamondback Moth (Lepidoptera: Plutellidae) Larvae
J. S. Okine, E. R. Mitchell, J. Carpenter, and G. Y. Hu....1520

Host Specificity of Bangasternus orientalis Capiomont (Coleoptera: Curculionidae) Introduced into the United States for Biological Control of Yellow Starthistle (Centaurea solstitialis L., Asteraceae: Carduae)
Gaetano Campobasso, Rouhollah Sobhian, Lloyd Knutson, and Gianni Terragitti....1525

Life History and Development of Pseudoscymnus tsugae (Coleoptera: Coccinellidae), a New Predator of the Hemlock Woolly Adelgid (Homoptera: Adelgidae)
Carole A. S-J. Cheah and Mark S. McClure....1531

Life History and Host Specificity of Rhopalomyia n. sp. (Diptera: Cecidomyiidae), a Potential Biological Control Agent of Scentless Chamomile
Hariet L. Hinz....1537

Perturbation of Regulated Apple Mites: Immigration and Pesticide Effects on Outbreaks of Panonychus ulmi and Associated Mites (Acari: Tetranychidae, Eriophyidae, Phytoseiidae and Stigmaeidae)
B. A. Croft and D. H. Slone....1548

Influence of Adjacent Cornfield Habitat, Trap Location, and Trap Height on Capture Numbers of Predators and a Parasitoid of the European Corn Borer (Lepidoptera: Pyralidae) in Central Iowa
Denny J. Bruck and Leslie C. Lewis....1557

Effects of Sugar Spray and Aphid Honeydew on Field Populations of the Parasitoid Bathyplectes curculionis (Hymenoptera: Ichneumonidae)
Helen S. Jacob and Edward W. Evans....1563  

Suitability of Bemisia argentifolii (Homoptera: Aleyrodidae) Instars for the Parasitoid Eretmocerus mundus (Hymenoptera: Aphelinidae)
Walker A. Jones and S. M. Greenberg....1569

Arrival, Establishment, and Habitat Use of the Multicolored Asian Lady Beetle (Coleoptera: Coccinellidae) in a Michigan Landscape
Manuel Colunga-Garcia and Stuart H. Gage....1574

INDEXES

1998 Cumulative Author Index....1584

1998 Cumulative Subject Index....1588