Ancistrocerus albotricinctus (Zetterstedt, 1838); Ancistrocerus trimarginatus misident.
Previously known as A. albotricinctus (Zetterstedt, 1838) and sometimes misidentified as A. trimarginatus (Zetterstedt, 1838). A colour form in Ireland and the Scottish Isles has ivory white tergal bands; elsewhere the bands are bright yellow. Identification keys and general biology are given in Julliard (1950), Blüthgen (1961), Spradbery (1973), Richards (1980) and Yeo & Corbet (1995).
Found throughout England, Wales and Scotland (except Orkney and Shetland) and coastal Ireland, but not recorded from the Channel Islands. Mainly a coastal species in England and Wales.
Overseas, occurs in many parts of Europe (Sweden, Finland, Denmark, The Netherlands, Belgium, France, Spain, Germany, Switzerland, Italy, Poland, Austria, Bulgaria), North Africa (Morocco) and Asia (Manchuria and Korea to Kamchatka).