Ancient beetle reveals a missing chapter in firefly evolution
Paleontologists have discovered a 100-million-year-old beetle preserved in amber with a unique, complex antenna structure. The specimen, named Icaroramus perisi, features a 'quadriheteroramose' branching pattern never before seen in any insect species.
Why it matters
This discovery provides a missing evolutionary link in beetle development and offers new insights into how insect sensory organs evolved to enhance pheromone detection.
About 100 million years ago, a small beetle crawled across a tree in what is now northern Myanmar and got caught in a bead of resin.
The resin hardened into amber, and the beetle stayed whole inside it.
When a team of paleontologists cut into that amber, they found something no living beetle carries. Its antennae branch, and then those branches branch again into two separate kinds.
Yanda Li, a doctoral student at the University of Bristol , led the work.
He teamed up with Professor Chenyang Cai of the Nanjing Institute of Geology and Palaeontology of the Chinese Academy of Sciences ( NIGPAS ).
The team named the beetle Icaroramus perisi , after Icarus, the figure who flew too close to the sun. The species name honors the paleoentomologist Dr. David Peris.
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