This species is generally darker than the Light Arches (A. lithoxylaea).
The early stages have not been recorded in the wild, but it is presumed that their life-cycle is the same as similar species.
Grassland on chalky and limestone soils.
Recorded in 12 (4.4%) of the 270 2km squares of Huntingdonshire.
Last recorded in June 2019
Recorded date range (Adult): 11 June to 19 July