Lethal insect for plants

This is a Grub of Vine Weevil

I gave some informations about Vine Weevil Beetle on my previous post. I did not have its Grub’s picture at that time. Finally, I have found some Grubs in one of our pot which contained Lilly bulbs. This plant wasn’t doing very well and it was dying because of the Grubs eating the bulbs. I treated this plant with Nematodes but it was already too late and the damage was done. Still, most of the grubs had been killed by Nematodes. I found only six grubs in the pot , two were alive and four were dead.

Read more to identify these grubs and to eliminate.