| Megapenthes lugens | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Elateridae |
| Subfamily: | Elaterinae |
| Genus: | Megapenthes |
| Species: | M. lugens
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| Binomial name | |
| Megapenthes lugens (Redtenbacher, 1842)
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| Synonyms | |
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Megapenthes lugens is a species of primarily European click beetle. The adult is black, narrow and 7–10 mm (0.28–0.39 in) long. The larvae feed on weevil larvae in the decaying trunks of beech and elm. In July 2010, the common name "queen's executioner beetle" was proposed following a competition.