I've got a few (mostly badly cropped) photos from this year and last year for ID.. I've attempted some of them but am unsure of the validity.
I understand if some may be too difficult to ID from the poor-quality shots.
1. Burara etelka is right.
HW patch solid & placed close to the cellend veins.
2. B harisa is right.
HW patch streaky & placed some distance from the cellend cross veins.
3. Potanthus serina is right.
FW spot 5 smaller than spot 4; HW with a small spot 6 near inner end of band; marginal areas neatly orange brown with dark veins.
Abdominal end always with a broad dark band.
Very interesting to read about the differences between the Caltoris species. Having the colour as an id indicator is quite subjective and I can see why pictures often cannot produce definitive ids for many hesperiids.