Aricia artaxerxes

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NORTHERN BROWN ARGUS  Aricia artaxerxes

There is an established metapopulation on the Morecambe Bay limestone (SD47); however in recent years the numbers have reduced somewhat although the maps do not  appear to show this. There are also records from the Furness, but not elsewhere in Lancashire or Cheshire. 

Personally I cannot see any difference between the Derbyshire butterflies (see under A. agestis) and those from north Lancashire, nor indeed between either of them and examples from southern England, and am unconvinced, despite all the literature on the subject, either that there are two distinct species in Britain or that the white-spotted "species" in Scotland is conspecific with what is classified as A. artaxerxes (or allous) on the continent.


THE THREE PERIODS COMPARED


PERIOD 1 (1990-1999) WITH RECORDING COVERAGE, ALTITUDE AND URBAN COVER


PERIOD 2 (2000-2009) WITH RECORDING COVERAGE, ALTITUDE AND URBAN COVER


PERIOD 3 (2010-2019) WITH RECORDING COVERAGE, ALTITUDE AND URBAN COVER

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