Are Lasius neoniger pleometrotic? Are Crematogaster cerasi polygynous?

[Reevak]

I was wondering if Lasius neoniger were pleometrotic, since Lasius niger are. Also, I've heard that Crematogaster cerasi nests have been recorded to have several queens in the wild but wanted some verification.

[hiitsmeiambored]

I know that lasius niger are monogenic and I'm not 100% sure about neoniger so I would say just keep queens seperate as even species that do accept multiple queens can have queens that don't like each other. I don't know about cerasi either