An online educational resource dedicated to the photography of
terrestrial wildlife and their habitats, found across South-West
England and the Devon and Cornwall Peninsula by David Fenwick.

Stoneflies (Plecoptera Images)
I am not familiar with this group at all and unfortunately have not had any time to spend on looking at them. I'd be grateful for any help with the identification of the following, if possible from images of the species.

Stonefly - Trevaylour Woods, Penzance. 28.03.11.

Stonefly adults - St. Erth, Cornwall. 18.08.13.

Perlodidae ?- Predatory Stoneflies

Stonefly Plecoptera Images UK