Mimesa equestris misident.; Psen rufa PANZER 1805
A small, ground-nesting, red and black solitary wasp. The nomenclature of this species has been the subject of some confusion. Identification keys are given in Yeo & Corbet (1995) (as Psen bicolor); Lomholt (1984) (as Mimesa rufa), and Richards (1980) (as Psen bicolor). Prior to the publication of a paper by Spooner in 1948 the species was referred to as Psen equestris, so care is needed when citing older records of this wasp.
Widely recorded from scattered localities in southern Britain north to south Yorkshire.
Overseas, found widely distributed throughout Europe and Central Asia.