The species is mostly southern European (from
Portugal to the
Balkan peninsula and
Greece) as well as North African (from
Morocco to
Libya). It ranges in the east to
Asia Minor and
Syria. It also occurs in almost the whole of France to the south of the
British Isles and
Denmark. Also specimens have been caught in southern Germany. There are small, isolated occurrences in western Ukraine. In Germany, there are but so far no secure evidence of an indigenous population. In the Middle East, in southern Turkey, Cyprus, Crete and the Greek islands of the south-east, the nominate
S. i. imitaria is replaced by
S. i. syriaca Culot, 1918. This form is less clearly has a little less corrugated outer cross line and a less clearly pronounced marginal line. The colour is slightly reddish. The reddish yellow form
S. i. syriaca occurs especially on hot, dry areas in the lowlands and hills. It is widespread in the Mediterranean region on sandy or stony soil, the
maquis shrubland, evergreen oak forests, olive groves and rocky grassland. In the Alps,
S. i. imitaria rises up to 900 m. In Morocco and also in the Mediterranean region it rises up to a height of 1,400 meters.
S. i. imitaria is limited to the coastal areas in western France and southern England. The moth flies in two generations from June to September in western Europe. The larvae feed on various forms of
privet. ==Subspecies==