4 & 5. Koruthaialos sindu.
The two K. sindu & rubecula are frequently confused & there are numerous misIDs on the web.
Two very reliable features are present.
K. sindu. Labial palp 3rd segment shrt , like a conical knob. Orange band's outer border with a mid indentation or notch.
https://4.bp.blogspot.com/-6RkAaBJ00...alos+sindu.jpg
https://static.inaturalist.org/photo...jpg?1444960678
https://www.ifoundbutterflies.org/me...05d68a54-1.jpg
http://yutaka.it-n.jp/hes/91530001.html
K. rubecula;Labial palp 3rd segment long ;Orange band's outer border smoothly curved to straight.
https://thaibutterflies.com/wp-conte...s-rubecula.jpg
https://4.bp.blogspot.com/-b_qzftxz-...s+rubecula.jpg
https://www.samuibutterflies.com/02_...rubecula.r.jpg
http://yutaka.it-n.jp/hes/91510010.html