Protoanisolarva juarezi (IMAGE) University of Oxford Caption Protoanisolarva juarezi, the gnat larva representing the oldest known diptera, 247 million years old, found in Mallorca, Spain Credit CN-IGME CSIC Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.