A problematic Nacaduba sp

[DaveChiangMai]

I have extensive notes on Nacaduba ID, from previous postings, but this individual seems not to fit any of the criteria well.
Photographed at Wiang Kosai NP, n. Thailand.

The strong dusting on the hindwing spot indicates either N. pavana or N. hermus.
However, the underwing patterning most resembles N. sanaya.
My gut feeling is that this should be N. hermus.

IMG_2551.JPG

[Psyche]

Yes this is N. hermus.
The black spot have a dusting of blue scales & the black striae within the bands moderate or weak.
http://www.ifoundbutterflies.org/med...gale_ah293.jpg
http://www.ifoundbutterflies.org/med...74adcf69-1.jpg

In N. sanaya the black spot is not dusted & the dark striae are almost obsolete.
http://1.bp.blogspot.com/-XEY63bA0JP...aya+elioti.jpg
http://3.bp.blogspot.com/-QJzSOx2aC7...acaduba+sp.jpg

TL Seow : Cheers.

[DaveChiangMai]

Many thanks for the confirmation and clarification.