INSECTS / MEGALOPTERA
ALDERFLIES
Common Alderfly Sialis lutaria
©Raymond Small TQ4792 24/04/2017
Alderflies are a common sight around Hainault Lake on sunny days from April to June. They have heavily veined robust-looking bodies and are broad headed. Adults typically live for 2-3 days and lay egg masses on waterside vegetation. They visit a range of plants - not only Alder as their name might suggest.
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