• Dirphia crassifurca is a member of the clade Dirphia tarquinia:

• Species	Author
  Dirphia aculea	Vuillot, 1892
  Dirphia aculecuatoriana	Brechlin, Meister & Käch, 2011
  Dirphia apeggyae	Brechlin, Meister & Käch, 2011
  Dirphia arianae	Brechlin, Käch & Meister, 2013
  Dirphia carchensis	Brechlin, Käch & Meister, 2013
  Dirphia carimaguensis	Decaëns, Bonilla & Naumann, 2005
  Dirphia crassifurca	Lemaire, 1971
  Dirphia horca	Dognin, 1894
  Dirphia lichyi	Lemaire, 1971
  Dirphia napoensis	L.Racheli & T.Racheli, 2005
  Dirphia pastazana	Brechlin, Meister & Käch, 2011
  Dirphia subhorca	Dognin, 1901
  Dirphia tarquinia	(Cramer, [1775])
  Dirphia tolimafurca	Brechlin & Meister, 2011

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