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A branch swelling caused by the feeding inside of a larva of poplar and willow borer, Cryptorhynchus lapathi, a weevil.

A branch swelling caused by the feeding inside of a larva of poplar and willow borer, a weevil.; Slovakia Credit: Milan Zubrik, Forest Research Institute - Slovakia, Bugwood.org<br />Licensed under a <a href="https://creativecommons.org/licenses/by-nc/3.0/us/">Creative Commons Attribution-Noncommercial 3.0 License</a>
Credit: Milan Zubrik, Forest Research Institute - Slovakia, Bugwood.org
Licensed under a Creative Commons Attribution-Noncommercial 3.0 License
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