The AntsCanada Ant Forum's

I'm going to assume 100% these are tetramorium immigrans now.

Mine really looks like yours, now that I notice the brown parts, I thought it was full black. Also after watching some of AntsCanada videos, I'm going to assume mine is also Tetramorium as well.

I tried to set the medicine jar like the test tube but it was too wide to block the water, so instead, I used a lot of cotton balls for the water and it looks like it still moist since I last checked awhile ago. As for the cap I use a lot of cotton balls as well to cover and a little bit of masking ...

Ah, I didn't know and I noticed when I looked at the queens! I think the queens are a little bigger about 4 MM I think. I tried taking an image of her, did my best with the camera I have. Also it's been about a week and few days now I think since I moved her into the medicine jar. Laying quite a lot...

I'm assuming these are pavement ant tetramorium species but they are more black than brown. They were also found near cement in my backyard. Found in San Jose, California, the United States on May 30th. I measured them using a measuring tape with 3/8 cm I think and it's about 3.75 MM. I don't have a...