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I agree I think this is a D.chrysippus ,but I have never seen one without the black and white wing bands before,nice spot.
I too am more familiar with the form with black and white markings, but try the following reference:
Non-Mendelian segregation and variable penetrance of colour genes in the polymorphic butterfly Danaus chrysippus (L.), David A S Smith, Heredity (1998) 80, 474–480; doi:10.1046/j.1365-2540.1998.00314.x
This seems to be freely available online (!)and figure 1 explains how several colour forms of the butterfly are genetically controlled. 1(c) is dorippus, 1(d) is albinus, both minus the black and white.
There is also a form of the Mimic Hypolimnas misippus that closely resembles this specimen. Can that be ruled out?
The female H. misippus has indeed evolved local forms that mimic the local variant of chrysippus. I believe we can exclude misippus here; the latter generally has a broader black border with two rows of white spots, lacks the pair of prominent dark markings on the hindwing either side of the abdomen, and has more residual black markings on the forewing. There is a nice plate from the Linnean Society here (http://www.classicnatureprints.com/pr.PZS%20Fauna/e.knight.hypolimnas.html) that illustrates several forms of misippus (left) and chrysippus (right).
Lat/Lng: 17.0101, 54.0722