Agrypnetes crassicornis (The Malham Sedge) A male is shown here.

This is a critically endangered Caddisfly which is only found in one lake in Britain,  Malham Tarn, North Yorkshire. Photographed by Sharon Flint on the Northern shore of the tarn on August 9th 2016. 


All the latest events for the freshwater section:

Sharon and Peter Flint of the Freshwater Section attended the National Forum for Biological Recording conference at Lancaster Unversity in 2016, details of which can be found here

A poster entitled, Moth Trapping for River Flies, was presented and the work of the YNU Lepidoptera section with the Freshwater section on recording Mayflies, Stoneflies and Caddisflies discussed.

Freshwater Ecology ~ Contacts and Recorders


Chairman: Currently vacant


Mayflies, Stone flies and Caddisflies and aquatic ecology: Sharon Flint  Email:


Freshwater News