Previously Methocha ichneumonides (Latreille,1805) Identification keys and general biology are given in Champion & Champion (1914), Richards (1980), Gauld & Bolton (1988) and Yeo & Corbet (1995). Females are wingless, but males are fully winged.
South Wales and England north to South-east Yorkshire (Allerthorpe Common), North-east Yorkshire (Strensall Common) and Cumberland (Skirwith). Not recorded in Scotland or Ireland.
Overseas, found in many parts of mainland Europe (Norway, Sweden, Finland, Denmark, The Netherlands, France, Germany, Italy and Hungary) and North Africa.