(bay area, California) i found some dead alates and i don't know the species

[AntBonez]

I found them in a old and abandoned spider web afew feet from a cluster of small ant mounds. I didn't see any workers at the mounds but they look like they were maintained. The date is February fifth but the dead alates in the pictures could be from a far passed nuptial flight. They are about 4mm in length. I would like to know what species they are so I can watch for alates the next time they are in season.

https://drive.google.com/folderview?id=1SdBGNNWpO6R36seELS_ui-p5zl1hePsy

[Will230145]

Those are all male alate sand are harder to get denting and I cant really identify ants, sorry I couldn’t help

[Jadeninja9]

All are Prenolepis imparis