Pseudopipona basalis SMITH 1857; Pseudopipona variegata misident.
The only representative of its genus in Britain, this species has always been regarded as a rarity, from its discovery in Britain in 1868 to the present day (Archer 2000). It is targeted for action under English Nature's Species Recovery Programme (Edwards & Roberts 1995; Roberts 1996, 1997, 1998, 1999; Roberts & Else 1997).
The species is restricted in Britain to a few heathland sites in the Poole Basin of south-east Dorset. This is a Holarctic species with records from western Europe (where it is rare), the Mediterranean region (including north Africa), and central Asia. In North America it is known from Alaska to New Mexico.