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The true position of this species is still in dispute.
For a very long time, this was considered to be a subspecies of D.
eichhorni, however the main body of learned opinion now considers it
to be separate. Without adequate specimens available to me to argue
this, I will follow the majority!
Original Description- Jordan (1911, Novitates
Zoologicae xii)- "Male & Female: A subspecies eichh.
eichhorni dicta alis anticus subtus macula nigra discocellulari plus
duplo angustiore facile distinguenda.
The white area on the upper surface of the fore wing
is smaller and more diffuse at the edges than in D.e.eichhorni
and in one of the males so much diffused with black as to be almost
entirely suppressed. the black discocellular bar of the underside of the
fore wing measures only 1mm. or less in width, and is angulate, being
sometimes almost interrupted before
R² (vein 5)".
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