thank you for your answer. Yes, they actually are eggs. Often those are carried at the dorsal gaster side:links are only visible for registered users
The shedding of wings does not seem to always be related to sucessfull mating. I can confirm copulation on the ground, could you describe the place where you saw mating taking place and distance to the surrounding nests? What did the mating look like exactly? Were several males involved? I found the males very attracted to light, did you see any reflecting surfaces or foliage in bright color? Details welcome at this point
Unlike with many other species, i could see a sucessfull mating with a male even in captivity. After removing a big amount of alate reproductives I observed copulations in the very unromantic collecting basin.
Please keep reporting on their developement!
Someone has mentioned adding workers of an established colony. Since it is possible that none of those queens will survive founding alone, you could consider adding a few hundred workers to one of the queens (separate them in packs of 50-100 and give them a day or two alone, to allow possibly critical colony odor to disperse. Dont forget offering a water source, ie wet cotton. Only add one "pack" at a time and give them some time to adapt. adding a big number all at once might lead to aggression). It would be interested to observe if the other queens manage to found colonys be themselfes, or if colony founding is indeed achieved by returning queens and nest splitting.
If you observe anything else in nature, please report as well.
Although it will not be any help with their identification:links are only visible for registered users