This species is similar to A.geminana but is generally larger and differs in having a well-developed pre-tornal marking.
Low-lying wet moorland, mosses and heaths, usually where scattered birches are found.
Recorded in 1 (0.4%) of the 270 2km squares of Huntingdonshire.
Last recorded in July 1997
Recorded date range (Adult): 23 July to 23 July