Widespread but local, Wesmaelius (Wesmaelius) quadrifasciatus (Reuter, 1894) is recorded from England, Wales, Scotland and Ireland in association with Larix decidua and flies from May to September.

References and further information:

• A Key to the Adults of British Lacewings and their Allies. Plant, C. W. (1997)
• Insects of Britain and Western Europe. Chinery, M. (2007)