Alderfly (Sialis lutaria)
 Alderfly nymph in water
© www.osfimages.com |  Alderfly nymph in water
© www.osfimages.com |  Alderfly
© www.osfimages.com |
 Female alderfly laying eggs
© www.osfimages.com |  Alderfly with eggs
© K. G. Vock/OKAPIA / www.osfimages.com |
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