I just caught two crematogastors in my backyard in the last week, if you are still looking. But I think they may be done now as I went from seeing a few a day to none in the past 5 or so days. With dilligence and some luck you might be able to find one.
I live about an hour north of the Bronx, in a forest on top of a mountain lol.
And yea the 'labor day ant' (lasius neoniger).
We used to see the nest near my house fly almost every year during labor day weekend when we used to have parties at my place. Never caught one though as this was before I got into anting, this is my first summer Queen hunting.
Sorry for the delayed information, hope you were able to find something.
Edited by matt123, September 21 2017 - 9:08 AM.