{"id":241,"date":"2025-07-07T00:46:40","date_gmt":"2025-07-07T00:46:40","guid":{"rendered":"https:\/\/macrostock.eu\/?p=241"},"modified":"2025-07-07T00:46:40","modified_gmt":"2025-07-07T00:46:40","slug":"dead-nettle-leaf-beetle-crysolina-fastuosa","status":"publish","type":"post","link":"https:\/\/macrostock.karits.eu\/index.php\/2025\/07\/07\/dead-nettle-leaf-beetle-crysolina-fastuosa\/","title":{"rendered":"Dead-Nettle Leaf Beetle (Crysolina fastuosa)"},"content":{"rendered":"\n
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Dead-Nettle Leaf Beetle (Chrysolina fastuosa<\/em>)<\/h3>\n\n\n\n

The Dead-nettle leaf beetle<\/strong>, Chrysolina fastuosa<\/em>, is a stunning metallic beetle belonging to the Chrysomelidae<\/strong> family (leaf beetles). It is best known for its vibrant iridescent colors and its close association with dead-nettles and other mint-family plants.<\/p>\n\n\n\n

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\ud83e\udeb2 Identification<\/h2>\n\n\n\n
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  • Size<\/strong>: ~6\u20138 mm in length<\/li>\n\n\n\n
  • Shape<\/strong>: Oval, convex body<\/li>\n\n\n\n
  • Coloration<\/strong>:\n
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    • Iridescent<\/strong>: brilliant green<\/strong>, blue<\/strong>, purple<\/strong>, or bronze<\/strong><\/li>\n\n\n\n
    • Often has a striped<\/strong> appearance with metallic hues<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • Antennae<\/strong>: Thin, black, and relatively long<\/li>\n<\/ul>\n\n\n\n

      The brilliant, jewel-like coloring helps distinguish this beetle from other leaf beetles.<\/p>\n\n\n\n

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      \ud83c\udf3f Habitat<\/h2>\n\n\n\n
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      • Found in:\n
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        • Meadows<\/strong><\/li>\n\n\n\n
        • Roadside verges<\/strong><\/li>\n\n\n\n
        • Field margins<\/strong><\/li>\n\n\n\n
        • Gardens<\/strong>, especially those with wild plants<\/li>\n<\/ul>\n<\/li>\n\n\n\n
        • Prefers areas with dead-nettles (Lamium spp.)<\/strong>, hedge woundwort<\/strong>, and other mint-family (Lamiaceae)<\/strong> plants<\/li>\n<\/ul>\n\n\n\n
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          \ud83c\udf31 Diet<\/h2>\n\n\n\n
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          • Larvae and adults<\/strong> feed primarily on:\n
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            • Dead-nettle leaves<\/strong><\/li>\n\n\n\n
            • Hedge woundwort (Stachys sylvatica)<\/strong><\/li>\n\n\n\n
            • Other members of the mint family<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n
            • Creates distinctive holes in leaves as it grazes<\/li>\n<\/ul>\n\n\n\n
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              \ud83d\udd01 Life Cycle<\/h2>\n\n\n\n
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              • Adults<\/strong> are most commonly seen from spring to late summer<\/strong><\/li>\n\n\n\n
              • Eggs<\/strong> are laid on host plants<\/li>\n\n\n\n
              • Larvae<\/strong> feed on the same foliage before pupating in the soil<\/li>\n\n\n\n
              • One or possibly two generations per year, depending on climate<\/li>\n<\/ul>\n\n\n\n
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                \ud83c\udf0d Distribution<\/h2>\n\n\n\n
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                • Widespread across:\n
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                  • Europe<\/strong>, including the UK<\/strong><\/li>\n\n\n\n
                  • Occasionally seen in temperate regions of Asia<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n
                  • Considered locally common<\/strong> but easily overlooked due to its small size<\/li>\n<\/ul>\n\n\n\n
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                    \ud83e\uddec Interesting Facts<\/h2>\n\n\n\n
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                    • The iridescence is not from pigment, but from structural coloration<\/strong>, caused by microscopic layers in the cuticle that reflect light<\/li>\n\n\n\n
                    • Despite its dazzling colors, it has effective camouflage among the shiny green leaves of its host plants<\/li>\n\n\n\n
                    • Plays a minor role in controlling overgrowth of certain mint-family plants<\/li>\n<\/ul>\n\n\n\n
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                      The Dead-nettle Leaf Beetle<\/strong> is a perfect example of nature\u2019s artistry in miniature. Its brilliant, shifting colors and preference for wildflowers make it a charming species to spot for nature lovers and photographers alike.<\/p>\n\n\n\n