Polygonia c-album

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COMMA Polygonia c-album

There was a definite spread northwards during the 1980s and 1990s, and the populations seem to have stabilised since then with a fairly wide distribution. P. c-album often occurs with A. urticae and I. io, but is more of a woodland species than either of them, and does not usually occur in such numbers, largely because its caterpillars are not gregarious as theirs are.

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

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