Our pinned mayfly, stonefly and caddisfly specimens are groups of insects that have life cycles reliant on freshwater. Where these insects are plentiful, they are fantastic indicators of water quality.
Ephemeroptera (mayflies), Plecoptera (stoneflies) and Trichoptera (caddisflies) – or EPT for short – are three orders of insects found in freshwater systems across the world. These three key groups are important bioindicators, meaning that their presence and the size of their populations can give us an idea about the health of a freshwater habitat. There are approximately 89,000 specimens in the Museum’s EPT collection, and the Digital Collections Programme (DCP) are in the process of digitising them. Mobilising this data will aid research being undertaken by the International Union for Conservation of Nature (IUCN), to further our understanding of EPT distribution and assess these species’ vulnerability to extinction.