Mexican Lime problem.

[Galka]

My Mexican Lime got this bump on its trunk. I have no idea what it is. Should I cut it off? I don't know how to do it so I won't lose the tree. Any ideas?

[Galka]

Another picture.

[Doglips]

I've seen weevils that get into trees that look like that.  Never seen it on citrus.  My guess is that there is something in there.
Is there a pin hole on it?
Should it be a critter you could stab it with a pin/nail.  The more slicing, the more damage.
I'd do a long vertical slice if you decide to explore, less cambium loss.
Let the experts weigh in.

[Millet]

Looks like Citrus Gull Wasp.- Millet

http://www.projectnoah.org/spottings/17870098

[Galka]

Thanks guys. I decided to cut the branch off. The tree is kinda leggy so it needs to be pruned anyway. I will also cut that bump open to see what is inside and take some pics.

[Galka]

I've seen weevils that get into trees that look like that.  Never seen it on citrus.  My guess is that there is something in there.
Is there a pin hole on it?
Should it be a critter you could stab it with a pin/nail.  The more slicing, the more damage.
I'd do a long vertical slice if you decide to explore, less cambium loss.
Let the experts weigh in.

I don't see any holes on it. I will explore it for sure. 

[bsbullie]

.

[Mike T]

Bumps and irregularities like that are unlikely to be a major problem.There could be more injury problems with removing it than leaving it.