Spruce Beetles (IMAGE) Colorado State University Caption Researcher Isaac Dell collected hourly temperature data along with more than 70,000 insects across the 2017 and 2018 growing seasons. Credit Karina Puikkonen/Colorado State University Usage Restrictions None 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.