This book deals with the influence of solar activity and its terrestrial effects in connection with the light trapping of insects. It examines issues such as the interplanetary magnetic field, ionospheric disturbances, tropopause, geomagnetic field, ground-level disturbances, tropospheric ozone content, and twilights phenomena, among others. Bringing together data from a huge amount of moths from Hungary, Australia, and the USA, it demonstrates that the role of the Sun has a multifaceted effect on the flight activity of moths, an unprecedented finding in the literature. The book will appeal to special libraries, research institutes, university departments, entomological societies, and entomologists.