Range & Status
Rare; the only recent records are from two small streams in the English Lake District.
There is a single record for Cornwall (in 1971). This is almost certainly a misidentification of one of the other two common Glossosoma species as the key then available to larvae led to many such errors occurring.
Habitat & Ecology
Occurs in streams, in fine silt, sand, gravel and small pebble substratum.
Special recognition for host watercourses.