Dismorphia lygdamis, the catasticta mimic or Lygdamis mimic white, is a butterfly in the family Pieridae. It is found in Ecuador and Peru. The habitat consists of cloud forests.
The wingspan is about .World Field Guide Adults appears to be a mimic of Catasticta sinapina.
Subspecies The following subspecies are recognised: Dismorphia lygdamis lygdamis (Ecuador) Dismorphia lygdamis doris Baumann & Reissinger, 1969 (Peru) Dismorphia lygdamis beatrix Lamas, 2004 (Peru)
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