Alder Spittlebug Aphrophora alni

This is quite a large bug with a length of 9-10mm, almost half an inch overall. A common and widespread species, the adults are seen May to October. It is associated with a wide range of trees and shrubs, not just alder. The larvae and eggs live in a protective mass of bubbles called ‘cuckoo-spit’.

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July 2017, rear garden, Staffordshire, England.