Nest of a fruit-tree pinhole borer (IMAGE) University of Freiburg Caption Nest of a fruit-tree pinhole borer (Xyleborinus saxesenii) with adult beetles and larvae. The yellow fungal mycelium of the food fungus is visible in the vicinity of the nest. Credit Davide Vallotto Usage Restrictions University of Freiburg License Original 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.