Male <i>Okanagana viridis</i> (1 of 2) (IMAGE) Entomological Society of America Caption The cicada Okanagana viridis is almost solid bright green, and it calls from high in trees during daylight hours and occasionally at dusk, during the summer months. Credit Entomological Society of America Usage Restrictions Credit Entomological Society of America. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.