Priocnemis fennica belongs in Priocnemis sens. str., where, along with hyalinata (Fabricius), it exhibits the character of a greatly enlarged inner tooth on the tarsal claw. Males exhibit distinct differences in their genitalia in comparison to hyalinata; females of both species are more similar and the characters to separate them more subtle (Day, 1988).
It has only relatively recently been recognised as British (Day, 1979) and older records of ‘hyalinata’, or its synonym femoralis, might refer to either species; fennica actually being more widespread in Britain.
England, common in the south but apparently absent from the south-west and local in Wales. Also recorded from Ireland (O’Connor et al., 2009). Not recorded from either Scotland or the Channel Islands
It occurs in northern and central Europe (Wolf, 1972). France, Belgium, Netherlands, Luxembourg, Italy, Germany, Denmark, Austria, Czech Republic, Slovakia, Poland, Belarus and Finland (Wahis, 2011).