I don't think this is silhetensis, the wing shape and general appearance doesn't match and the lack of a tornal lobe on the hindwing should indicate that this is a member of the alea subgroup
Admittedly there were some doubts right from the start with this individual.
However, I went through the cleander group ,including the alea subgroup before concluding.
The complete dislocation of the HW band at vein2 & the arrangement of the FW upper four postdiscal spots put it in the cleander group.
So it has to be a member of the cleander group. whether subgroup cleander or subgroup alea.
2. The dislocation of the HW band at vein 2 is typically wide in the cleander subgroup & close in the alea subgroup.
3 The 'V' spot tend to be better formed in cleander subgroup.
4. HW postdiscal spots 6 & 7 tends to be quadrate, low in tyhe alea subgroup, & tall & narrow in A. silhetensis.
Thanks, Dr Seow. The alea subgroup is very tough and i always find myself stuck at generic level and unable to proceed further, which is very annoying especially when you can't tell if the variation in different individuals is intraspecific or a species-level sort of difference