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The black trapezoidal spots are those on both sides of the midline you highlighted.
The distance between both last dc let us suppose it has only 3 post dc, so not Hebecnema. The frons is also too broad for a male Hebecnema, and the parafacials are well too wide (even visble from above). I'm confident that it is not Hebecnema.
I hold to my first thought about a Spilogona species with dark infuscated wings (like S. dispar for example).