Naturally occurring fluorescence in transparent insect wings

aSchool of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, United Kingdom bDepartment of Physics & Namur Institute of Structured Matter (NISM), University of Namur, Rue de Bruxelles 61, 5000 Namur, Belgium cMolecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200D, 3001 Heverlee, Belgium dCenter for Photonics, Institute of Physics, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia eL3 – Luminescent Lanthanide Lab, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium fEnvironmental Futures Centre, Griffith University, Nathan, QLD 4111, Australia gMicroand Nanophotonic Materials Group, University of Mons, Place du Parc 20, 7000 Mons, Belgium *Co-shared first authorship