Ancistrocerus trimarginatus (Zetterstedt, 1838)
Identification keys and general biology are given in Nielsen (1932), Spradbery (1973), Felton (unpublished), Richards (1980) and Yeo & Corbet (1995).
Throughout England and Wales including the Isle of Man. Also recorded from Ireland and the Channel Islands.
Overseas, found in many parts of mainland Europe (Norway, Sweden, Finland, Denmark, The Netherlands, France, Germany, Italy, Poland, Austria, Hungary, Greece and Romania) and across Asia to Mongolia, Sakhalin, Kamchatka and Japan.