The AntsCanada Ant Forum's

It can be honey, maple syrup, or just table sugar mixed with water. Ants like their sweets somewhat dilute.

Now they will need a foraging space where they can search for food. Any container with vertical walls should be suitable, so long as it is lined with talcum/isopropanol paint. They will need regular access to fresh sugary liquid and insect protein, just like any other Formica colony.

I doubt you will find Paratrechina in NH, but there are many native black ants you are likely to see.

Kudos to Phoenix for making IDs of foreign ants, but this is a Formica queen.

They also don't need to be from the fusca group. Any Formica pupae will do.

The queen in the second set of images is Pheidole.

I can't see any of the pictures because of Photobucket shenanigans, but Lasius niger are hardly ever found in North America. If this is Lasius , then L. alienus would be the most likely. These generally do not reach 10mm in size, so I am guessing that this is a Formica queen. No telling without seei...

Most of the time, yes, Formica pupae will be cocooned.

I'm pretty sure this Pogonomyrmex species is semi-claustral, but other than that, it would seem perfectly fine to keep these as your first ants.

They don't need to come from a mound-building Formica nest -- any species of Formica will do. If you find that Polyergus colony on a raid again, maybe you can utilize that one weird trick to rob them of pupae which you can offer to the queen.