Any help to ID ant?

Ok, so here are some pictures of the ants that are invading my home and I have no idea or the slightest clue what kind of ants they are. These were the best pictures I could get. I know three things for sure:

1.) They don't sting
2.) They have different sizes
3.) They have two nodes(the thing before the abdomen)

http://imageshack.us/a/img543/2290/wpsn.jpg
http://imageshack.us/a/img19/8347/ckkg.jpg
http://imageshack.us/a/img819/4328/qnw1.jpg
http://imageshack.us/a/img59/9731/pmz8.jpg
http://imageshack.us/a/img607/8918/ukwf.jpg

At first I thought it was the crazy ant, but it's supposed to have a spine thing and I don't see one, so any help is greatly appreciated. Just for informational purposes I'm from Louisiana.

Genus Solenopsis - Fire / Thief

Or check out

Genus Crematogaster - Acrobat Ants

Looks like a normal to me

Quote:

---

Originally Posted by 3skulls

Genus Solenopsis - Fire / Thief

Or check out

Genus Crematogaster - Acrobat Ants

---

Well a fire ant is red, and a thief ant is yellow. I thought about it being a thief ant, but thief ants have a stinger as well:
http://lancaster.unl.edu/pest/ants/thiefant.shtml

Then I thought about maybe Pharoah but I don't believe it's them because the workers are different sizes, and that doesn't say they are.
http://lancaster.unl.edu/pest/ants/pharoahant.shtml

The acrobat ant is the closest I could find, especially with color, but doesn't say anything about different size workers and also it doesn't have the spine thing on the thorax. Here's a link:
http://lancaster.unl.edu/pest/ants/acrobatant.shtml

Quote:

---

Originally Posted by elduki

Looks like a normal to me

---

Just a regular normal ant? I don't know anything about ants.

Hmm. I can't tell from those pics.
I think there is a Ref Fire Ant but I'm not sure all Fire ants are red.

http://bugguide.net/node/view/377415

What about
Monomorium sp.

http://bugguide.net/node/view/395758

I really don't know anything about ants but they are some really cool bugs!

Quote:

---

Originally Posted by 3skulls

Hmm. I can't tell from those pics.
I think there is a Ref Fire Ant but I'm not sure all Fire ants are red.

http://bugguide.net/node/view/377415

What about
Monomorium sp.

http://bugguide.net/node/view/395758

I really don't know anything about ants but they are some really cool bugs!

---

Yea, now the second one is a possibility, but I can tell you 100% that it's not a fire ant. Fire ants sting and I've had 5+ of these guys wandering no my hand when I tried to pick them up and I was never stung.

Do they smell nasty when you squish them?? We usually get odorous house ants back here, ad they smell like formic acid (really bitter) when crushed

Quote:

---

Originally Posted by Mephibosheth1

Do they smell nasty when you squish them?? We usually get odorous house ants back here, ad they smell like formic acid (really bitter) when crushed

---

I haven't noticed anything.