Dionysios is an Associate Professor of the Agricultural University of Athens (AUA), Laboratory of Agricultural Zoology and Entomology. He studied the biological parameters and food preferences of Macrolophus pygmaeus in his PhD. His main research interests are:  Integrated Pest Management, Biological control, omnivorous predators, conservation biological control, vegetable and olive pests, electronic traps, Decision Support Systems, essential oils from aromatic plants as new insecticides. He was member of the European Food Safety Authority (EFSA) Plant Health Panel (2006-2009), convenor of IOBC/WPRS WG “Integrated Protection of Olive Crops” (2010-2018) and President of the Hellenic Entomological Society (2014-2015, 2020-). He was chairman or member of the organizing and scientific committees of several international and a national conferences and invited speaker in international conferences. He is member of the editorial board of five journals and guest editor in special issues. He was coordinator or member of the research teams of projects related to applications of precision agriculture methods in fruit fly control, plant oils and extracts as candidates for new insecticides, functional agrobiodiversity, IPM, educational projects.