SCOTCH ARGUS Erebia aethiops
The few dots in the area of the Morecambe Bay limestones in all three maps are outliers from the large stable population on Arnside Knott, in the Westmorland portion of SD47. The dot near Morecambe town on the third map is presumably an error. One wonders how many centuries the Arnside colony has been completely isolated from the next nearest colonies, in Scotland, and how many more centuries it will be able to persist.
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
