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Definition of Thunderbolt beetle
1. Noun. A long-horned beetle (''Arhopalus fulminans'') whose larva bores in the trunks of oak and chestnut trees. ¹
¹ Source: wiktionary.com
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1. Noun. A long-horned beetle (''Arhopalus fulminans'') whose larva bores in the trunks of oak and chestnut trees. ¹
¹ Source: wiktionary.com