Orthonevra nobilis (Fallén, 1817)
Biology & ecology:
The larva is aquatic and has been found in organically enriched mud in springs and flushes. Adults are usually found by sweeping lush vegetation in marshes and fens, but they can also be seen visiting flowers. Occasionally found well away from wetlands.
Widespread in wetlands throughout Britain, but most frequent in southern lowland areas. Adults appear to be very mobile and can be found well away from wet sites.
Status & conservation:
Trends suggest a decline in occurrence since the late 1990s.