I am afraid I have to disappoint you here.
I forgot how difficult & confusing in the past to try & work it out the Curetis species.
Firstly your observation here.
https://www.inaturalist.org/observations/133060718
It is a female from the large labial palps, rounded HW slightly hooked FW apex.
https://inaturalist-open-data.s3.ama...2027/large.jpg
https://inaturalist-open-data.s3.ama...2082/large.jpg
Compare with males C. santana.
https://3.bp.blogspot.com/-t9119-E8A...S_adult_05.jpg
https://3.bp.blogspot.com/-t9119-E8A...S_adult_05.jpg
No male Curetis species in our area have the HW orange reduced to a band.
http://yutaka.it-n.jp/lyc3/84050010.html
http://yutaka.it-n.jp/lyc3/84030010.html
http://yutaka.it-n.jp/lyc3/84070001.html
http://yutaka.it-n.jp/lyc3/84110010.html
The female C. santana is so rare no proper observation found.
Below is image from Bornean Lycaenid.
AA2.PNG
The underside markings .HW postdiscal spots 6 & 7 in line & submarginal spots 6 & 7 out of line is also that of C. santana
This shows that your observation is actually a Female Curetis santana.
Compare Female C. saronis.
https://inaturalist-open-data.s3.ama...975/large.jpeg
Unknown female with an irregular HW band.
This looks to be the female C. tagalica.
https://www.inaturalist.org/observations/131688085
Compare Female tagalica from Bornean lycaenid.
Attachment 27950
Other observations.
C. santana.
https://www.inaturalist.org/observations/74695451
https://www.inaturalist.org/observations/7331669
https://www.inaturalist.org/observations/90629654
Possibly C. bulis.
FW with a narrower patch ;HW with a longer black bar basally extending beyond the origin of vein 6 & 7.
https://www.inaturalist.org/observations/6911941
https://www.inaturalist.org/observations/98755895
https://www.inaturalist.org/observations/95371774
TL Seow: Cheers.