thunderbolt beetle

== English == === Etymology === Named in reference to the zigzag pattern on its back. === Noun === thunderbolt beetle (plural thunderbolt beetles) (dated) A long-horned beetle (Sarosesthes fulminans) whose larva bores in the trunks of oak and chestnut trees. === References === Sarosesthes on Wikipedia.Wikipedia Sarosesthes fulminans on Wikispecies.Wikispecies Category:Clytini on Wikimedia Commons.Wikimedia Commons “thunderbolt”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.