The AntsCanada Ant Forum's

Thank you so much for help, both of you.

I caught this today (June 22, 2017) at Chicago Downtown while I was walking along the riverside pedestrian trail.
The size of this queen ant is approximately 1 cm.
Here are the pictures:

https://goo.gl/photos/KBQmrBRn9aSMPr667

Thanks for the quick response and identification of scientific name.
This was my first post and I've seen many queen ID in the post. That's why I started here.
Soon I realized there is a forum solely dedicated to the ID.
My apologies.

Images are not properly posted. I don't know why this is so complicated. Anyway I tried may different ways but every attempt failed. Even worse, after few tries, my editing capability was restricted. I don't know what to make of it. So I put my google drive foloer: https://drive.google.com/open?id=0...

I've caught a big black ant on pavement near coffee shop 3 days ago. I researched out what it is and almost concluded it is a black carpenter ant. I am pretty sure it is a queen, but I would like to make sure from the experience ants keepers here that my conclusion is correct. Ant size : little bit ...