This volume is based on a Symposium entitled "Insect Flight: Dispersal and Migration" held at the XVllth International Congress of Entomology in Hamburg, Germany in August, 1984. An earlier similar Symposium was held at the XVthInternational Congressof Entomologyin 1976 in Washington DC, USA ("Evolution ofInsect Migration and Diapause" edited by Hugh Dingle, Springer-Verlag, 1978). It is, therefore, appropriate that the present Sym posium was held 8 years later in view ofthe intensified interest and develop ments in this field, particularly in the areas ofevolution, genetics, endocrine/ neuroendocrine influences,orientation, navigation and nocturnal flight activ ity. It was intended that the Symposium should have a fairly representative, albeit non-complete, coverage of the various aspects of its topic, and the Congress facilitated the gathering of many specialists in the field, enabling the presentation and discussion of 18 papers. Fifteen of these are presented in this volume, mostly as modified and expanded versions. Also included is a contribution by Roger Farrow who presented his paper at another section of the Congress, and one by Wolfgang Stein who could not attend the Con gress; an additional paper, by myself and Stuart Dashper, is included with the intention ofsupportingmypresentationat the Congress. One of the most interesting contributions was that by Rudiger Wehner on "The role of polar ized skylight in insect navigation". Muchofwhat he said has been published elsewhere under the title "Astronavigation in Insects"(AnnualReviewof Entomology 29:277-298,1984).

Inhalt
1 Introductory Chapter.- 2 Evolution and Genetics of Insect Migration.- 3 The Oogenesis-Flight Syndrome Revisited.- 4 The Endocrine Control of Flight Metabolism in Locusts.- 5 Sounds of Insects in Flight.- 6 Orientation at Night by High-Flying Insects.- 7 Lunar Periodicity of Insect Flight and Migration.- 8 Response of Some Night-Flying Insects to Polarized Light.- 9 Migration in the African Armyworm Spodoptera exempta: Genetic Determination of Migratory Capacity and a New Synthesis.- 10 Dispersal in Aphids, A Problem in Resource Allocation.- 11 Direction of Insect Migrations in Relation to the Wind.- 12 Flight Strategies of Migrating Monarch Butterflies (Danaus plexippus L.) in Southern Ontario.- 13 Interactions Between Synoptic Scale and Boundary-Layer Meteorology on Micro-Insect Migration.- 14 Derelicts of Dispersal: Arthropod Fallout on Pacific Northwest Volcanoes.- 15 Ecological Studies Indicating the Migration of Helothis zea, Spodoptera frugiperda, and Heliothis virescens from Northeastern Mexico and Texas.- 16 Radar Observations and Collections of Insects in the Gulf of Mexico.- 17 Modeling of Agricultural Pest Displacement.- 18 Dispersal of Insects of Public Health Importance.- 19 Night-Vision Equipment, Reproductive Biology, and Nocturnal Behavior: Importance to Studies of Insect Flight, Dispersal, and Migration.- 20 The Four Kinds of Migration.- Species Index.