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Following the latest government announcement concerning the current Covid-19 pandemic the Society headquarters at Mansion House has now closed.

Where possible emails will be monitored, any urgent enquiries should be forwarded to

Membership applications will be put on hold until further notice.

Our "identify that insect" service will continue, but our Director of Science cannot accept any physical samples to inspect during this time.

Our Librarian will not have access to our collections from home, but will be happy to try and locate references available to download from the internet.

All events and meetings have been cancelled until further notice

We hope that everyone stays well and we hope that normal business can resume soon for everyone, thank you for your understanding during this difficult time that the world finds itself in.

Kirsty Whiteford - Registrar

Alderflies (Megaloptera)

In early texts the Megaloptera were included within the Neuroptera, together with the Raphidioptera, but they have long been recognised as a distinct order. The monophyly of this group of three orders, sometimes termed the Neuropterida, is not in question, but the exact relationships between them are yet to be fully resolved.  Adult Megaloptera have broad flattened heads with biting mouthparts, and two pairs of very similar wings; all the larvae are freshwater predators. Worldwide there are around 330 known species in 2 families; in Britain there are 3 species in 1 family.

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