• Lethe (L.) langsongyuni is a member of the clade Lethe trimacula:

• Species	Author
  Lethe (L.) butleri	Leech, 1889
  Lethe (L.) langsongyuni	Huang, Wang & Fan, 2019
  Lethe (L.) liae	H. Huang, 2002
  Lethe (L.) proxima	Leech, [1892]
  Lethe (L.) trimacula	Leech, 1890
  Lethe (L.) umedai	Koiwaya, 1998

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