I just found out that A. dubius impha have white labial palps & look exactly like A. jhora.
South India have only two species A. dubius & pygmaeus so these two can be sorted out.
A. dubius dubius.
https://www.ifoundbutterflies.org/me...-boi/as545.jpg
https://www.ifoundbutterflies.org/me...17745438-1.jpg
https://www.ifoundbutterflies.org/me...unte_aa892.jpg
https://www.ifoundbutterflies.org/me...674786a0-1.jpg
A. pygmaeus.
https://www.ifoundbutterflies.org/me...057725c2-1.jpg
https://www.ifoundbutterflies.org/me...53172b5f-1.jpg
https://www.ifoundbutterflies.org/me...de842924-1.jpg
https://www.ifoundbutterflies.org/me...d6f34231-1.jpg
A. jhora creta HK.
https://3.bp.blogspot.com/--wnjfckuH...9D%25B6%2B.JPG
https://static.inaturalist.org/photo...jpg?1545328590
http://woxiong.butterfly-photo.com/d...m=178&pid=1376
A. dubius impha.
Thailand.
http://thaibutterflies.com/wp-conten...hus-dubius.jpg
This below ,a male with straight FW margin looks to be male A. jhora
https://wingscales.com/Hesperiidae/A...s-dubius-impha
Compare male jhora.
https://en.wikipedia.org/wiki/Aeroma...File:Jhora.jpg
(TBC).