Extra-limital range . Such a conclusion, based on just one individual, is not acceptable as nearly all specimens from the same area can be referred to subsp. Larger and much paler than the nominate subspecies. Forms a cline with subsp. During daylight hours, hides between boulders, amongst low vegetation at their base, or even on the ground in some shady location.
Light is very attractive, with large numbers often arriving over a short period.
Usually the last two weeks of May, with a partial second brood in mid-August. Initially, glossy blue-green with a faint, incomplete, whitish, encircling line which changes to brown after a few days. Prior to hatching, the whole ovum assumes a greyish colour. Newly hatched, the 4mm-long larva is bluish yellow with a small, black, upright horn, black prolegs and claspers. The light brown head is disproportionately large, as are the anterior segments which, together with the rest of the body, bear longitudinal rows of dark, bristle-bearing tubercles.