 reddishvalecountrypark.com | Alder leaf beetle is an 8 mm long dark metallic blue beetle that feeds on alder (Alnus) and is occasionally found on other deciduous trees such as beech (Fagus sylvaticus), hazel (Corylus) and hornbeam (Caprinus betulus). It overwinters as adults which emerge in the spring, sometimes in large numbers. |
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