Insect and Spider Identification: What insect is this?, 2 by pryshrm

pryshrm wrote:
I have a few of these small trees (i think it is Terminalia bellirica but imns) and their leaves are infested with some kind of insect. I thought they will go away on their own but they are not going away. It has been a few years now. Can some one please help me identify this menace and how to eliminate it. I have already tried neem oil spray, soap spray, but it has not worked.

Please help.

The first pic shows that this insect builds some membrane on top of the leaf. I pierced it by fingernail but couldn\'t see anything moving inside.

The pic 2 shows the leaf from the underside. There is nothing there but the spot has dried.

Pic 3 shows all leaves of the tree are affected.

Pic 4 is close up of a leaf.