I seem to be going in circle with this one.

I have cheched the superfamily Sesioidea without result.

So I am trying a logical approach which may well turn ut to be the correct one.

In the course of checking out these moths I realised the antennal difference is due to the sex, the male with more coarsely featured ones.
The almost symmetrically-shaped forewings & orange-red colouration is seen in both Atkinsonia & Snellenia.( & Tinaegeria -neotropical).

It is possible the male may have larger & more prominent labial palps & also longer fringe on the forewings.
Snellenia with its enormous palps can be discounted. There are only 2 Himalayan sppecies.

Here is the female from northern Thailand ( fat abdomen , smooth antennae. smaller spiny hind legs.)
http://www.flickr.com/photos/5395214...n/photostream/

Here is the male from Yunnan. (slender- built. pectinate antennae, larger more spiny legs , longer palps, longer hair fringe on FW.)
Note identical colour to the female above. Forewing & thorax wholly orange-red, head black.
http://www.flickr.com/photos/itchydo...n/photostream/

Since the male is identifiable as Atkinsonia, it follows the female is likewise so.

There are several species in the region.

TL Seow