to the Panel Discussion.- Status of the Knowledge of Ephemeroptera in Northeast Asia and Guidelines for Future Research.- The Current Status of Ephemeroptera Biology in Australia.- Knowledge of the African-Malagasy Mayflies.- The Gentle Quest: 200 Years in Search of North American Mayflies.- The Status of the Taxonomy of the Mayfly (Ephemeroptera) Fauna of South America.- The Ephemeroptera of New Zealand and New Caledonia.- Current Knowledge of Mayfly Research in Europe (Ephemeroptera).- Status of the Systematic Knowledge and Priorities in Ephemeroptera Studies: the Oriental Region.- Life Cycle and Annual Production of Caenis sp (Ephemeroptera, Caenidae) in Lake Escondido (Bariloche, Argentina).- Effects of Rotenone Treatment on Mayfly Drift and Standing Stocks in Two Norwegian Rivers.- Longitudinal Distribution of the Mayfly (Ephemeroptera) Communities at the Chocancharava River Basin (Cordoba, Argentina).- Emergence of Ephemeroptera from the Assiniboine River, Canada.- Mayflies as Food.- Seasonal Variation of Ephemeroptera in Four Streams of Guatopo National Park, Venezuela.- Abundance and Altitudinal Distribution of Ephemeroptera in an Andean-Patagonean River System (Argentina).- Ephemeroptera: Abundance and Distribution in Regulated Streams (San Luis, Argentina).- Epirhithral Communities of Mayflies (Ephemeroptera) of the Odra River Basin (Czech Republic).- Atopophlebia fortunensis Flowers (Ephemeroptera: Leptophlebiidae) and Caenis chamie Alba-Tercedor and Mosquera (Ephemeroptera: Caenidae). Notes on Their Biology and Ecology.- Distribution of Ephemeroptera in the Andean Part of the Rio Beni Drainage Basin (Bolivia): Regional Pattern or Control at the Local Scale?.- Abundance and Diversity of a Mayfly Taxocene in a South American Subtropical Mountain Stream.- A Prediction Model of Running Waters Ecosystem in the Czech Republic Based on Mayfly Taxocenes of Undisturbed Rhithral Streams.- Geographical and Seasonal Occurrence of Winter Stoneflies (Plecoptera: CapnilC0