Skip to main content

Paraleptophlebia werneri (Scarce purple dun)

Paraleptophlebia werneri is known from very few sites.  It was first recorded from Wiltshire in 1939 and since then has been also found in several other river systems in the south of England.  Nymphs of this species live chiefly in the pools and margins of calcareous watercourses where they burrow into, and live in gravel, sand or mud on the bed of the watercourse or move amongst aquatic plants.  This species is often found in watercourses that cease to flow in the summer or a choked with vegetation.  The nymphs are poor swimmers but are adapted for burrowing and moving amongst dense stands of plants, especially on the surface of the stems.  The nymphs feed by filtering or gathering fine particulate organic detritus from the sediment. 

 

There is one generation a year which usually overwinters as nymphs, but may also overwinter as eggs.  Adults can be found during May and June.

 


J


F


M


A


M


J


J


A


S


O


N


D