A different form of Apatura iris (Purple Emperor), that can develop when the pupae are exposed to low temperatures. Sometimes this blue irradiation is evenly distributed over his wings, sometimes it is not visible, as if vanished in a monotonous dark-brown background with white spots. Only the males have this texture colors. Like the Lesser Purple Emperor this butterfly lives in woodlands and tracks with black poplars or tremble poplars. The males can often be found in sunlit clearings, sucking on carnivore excrements. They are also attracted by human perspiration and by strong-smelling cheese.
One brood from June to August.
Larval host plants:
Tremble poplars and Black poplars.
Red List Germany: 3
1998 - 2005 by Mario Maier
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