Study of fossil katydids provides new insights into the evolution of the Mesozoic soundscape PNASNews
Insects were the first terrestrial animals to use airborne sound signals for long-distance communication. Among acoustically signaling insects, katydids stand out as an ideal source for investigating the evolution of acoustic organs and behavior.
Recently, Ph.D. student Xu Chunpeng, under the supervision of Profs. Wang Bo and Zhang Haichun from the Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences , working with an international team of paleoentomologists, carried out a detailed and global investigation of fossil katydids from the Mesozoic Era .
The study provides novel insights on acoustic evolution of Mesozoic katydids and evolution of the Mesozoic soundscape. It was published inThe research team reported the earliest tympanal ears and sound-producing system in exceptionally preserved Mesozoic katydids. "The newly found tympanal ears in prophalangopsid katydids from the Middle Jurassic Daohugou Konservat-Lagerstätte represent the earliest-known insect ears, extending the age range of the modern-type auditory tympana by 100 million years to the Middle Jurassic, some 160 million years ago," said Xu.
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