Post 12 pix 1 & 3 should be Sphingognatha patula, a widespread Himalayan species.
It is very close to fig 5 in the middle column below.
http://www.boldsystems.org/index.php...e?taxid=284914

I can't fathom the banded abdomen of the male in pix 2.

Two other similar species in the region.
Sphingognatha pallida (stated to be a synonym of S. asclepiades in MoB.)
http://www.boldsystems.org/index.php...e?taxid=354113
S. insulindica.
http://www.boldsystems.org/index.php...e?taxid=413929


TL Seow