Edited by M Fellowes, University of Reading; G Holloway, University of Reading; J Rolff, University of Sheffield, UK

• 1: Genetics, Relatedness and Social Behaviour in Insect SocietiesA F G Bourke, Zoological Society of London, UK 2: Do Insect Sexual Ornaments Demonstrate Heightened Condition-Dependence? S Cotton, and A Pomiankowski,University College London, UK 3: Sperm Competition in Butterflies and Moths, N Wedell,University of Leeds, Leeds, UK 4: Alternative Mating Tactics and Fatal Fighting in Male FigWasps, J M Cook, Imperial College London, UK 5: Seasonal Plasticity, Host Plants, and the Origin ofButterfly Biodiversity, S Nylin, K Gotthard andG H Nygren, Stockholm University, Sweden 6: Life Histories and Parasite Pressure Across the MajorGroups of Social Insects, J J Boosma, University of Copenhagen, Denmark, P Schmid-Hempel, ETH Zurich,Switzerland and W O H Hughes, University of Copenhagen,Denmark 7: Cascading Effects of Plant Genetic Variation onHerbivore Communities, R S Fritz, Vassar College,Poughkeepsie, New York USA and C G Hochwender,University of Evansville, Indiana, USA 8: The Role of Insect Reproduction in the Diversification of Insect Reproductive Processes, G DD Hurst, UniversityCollege London, UK, K M Webberley and R Knell, University of London, UK 9: The Evolution of Imperfect Mimicry, F Gilbert,Nottingham University, UK 10: Evolutionary Ecology of Insect Host-Parasite Interactions:and Ecological Immunology Perspective,K Wilson, Lancaster University, UK 11: Adaptive Plasticity in Response to Predators in DragonflyLarvae and Other Aquatic Insects, F Johansson, UmeaUniversity, Sweden and R Stoks, University of Leuven,Belgium 12: The Peppered Moth: Decline of a Darwinian Disciple,M E N Majerus, University of Cambridge, UK 13: Insecticide Resistance in the Mosquito Culex Pipiens:Towards an Understanding of the Evolution of AceGenes, M Weill, P Labbe, O Duron, N Pasteur, M Raymond, Université Montpellier II, France, P Fort, CNRS, Montpellier,France 14: Molecular and Ecological Differentiation of Species Interactions Across Large Geographic Regions: Californiaand the Pacific Northwest, J N Thompson , University of California, Santa Cruz, USA and R Calsbeek, University ofCalifornia, Los Angeles, USA 15: The Genetic Basis of Speciation in a Grasshopper HybridZone, D M Shuker, University of Edinburgh, UK, T M King,University of Otago, Dunedin, New Zealand, J L Bella,Universidad Autónoma de Madrid, Spain and R K Butlin,University of Sheffield, UK 16: Assortative Mating and Speciation as Pleiotropic Effectsof Ecological Adaptation: Examples in Moths and Butterflies, CD Jiggins, University of Edinburgh, UK, I Emelianov, Rothamsted Research, Harpenden, and J Mallet, University College London, UK 17: Evolutionary Changes In Expanding Butterfly Populations,J K Hill, C Dytham and C L Hughes, University of York, UK 18: Specialisations and Host Associations of Social Parasitesof Ants, J A Thomas, K Schönrogge and G W Elmes,Winfrith Technology Centre, Dorset, UK