SILVER-STUDDED BLUE Plebejus argus
I have never seen this butterfly in either Lancashire or Cheshire. The colony on the Wirral was an artificial introduction, with survived for a number of years as a result of habitat "management", but has since died out.
THE THREE PERIODS COMPARED
PERIOD 1 (1940-1994) WITH RECORDING COVERAGE, ALTITUDE AND URBAN COVER
PERIOD 2 (1995-2000) WITH RECORDING COVERAGE, ALTITUDE AND URBAN COVER
PERIOD 3 (2001-2007) WITH RECORDING COVERAGE, ALTITUDE AND URBAN COVER
