GENETIC VARIATION AND EVOLUTION.
Insect Pests and Evolution (K. Kim).
The Spatial Scale of Genetic Variation in Insect Populations (F. Gould).
THE NATURE OF GENETIC VARIATION.
Habitat–Related Variation and Evolution by Sexual Selection (K. Kaneshiro).
Adaptation to Spatial Variation in Habitat: Spatial Effects in Agroecosystems (D. Margolies).
ECOLOGY OF INVADING POPULATIONS.
Habitat Factors in New Pest Invasions (D. Pimentel).
The Evolution of Habitat Preference: Avoidance and Adaptation (M. Rausher).
THE PATTERNS OF VARIATION: CASE STUDIES.
Diversity and Variation of European Corn Borer Populations (W. Showers).
The Role of Demic Adaptation in Colonization and Spread of Scale Insect Populations (L. Hanks & R. Denno).
Impact of Intraspecific Variation on Integrated Pest Management (G. Kennedy).
Biology of Variations: Epilogue (K. Kim & B. McPheron).