I have a Crematogaster cf. cerasi queen. She has not laid and she will not until after hibernation. (Here where I live they fly in August and September). Do you have any info on how to keep them?
Unfortunately, I have not kept that species, or know how to keep them. But since it is also Crematogaster, they should have somewhat similar habits as other Crematogaster species. Since she has not laid any eggs yet, I would recommend to not bother her, until winter passes. I've had a Crematogaster queen and she kept eating her eggs. I put her in my wine fridge from October to March, and she laid eggs, but also ate them. She later died, most likely from dehydration, as I was away on a trip. If you live in a warmer place, then I would not attempt to hibernate them, but if you are in a much colder place during the winter, then I would recommend to try and hibernate her. These colonies of Crematogaster that I have love their honey, so when yours gets nanitics, try feeding them honey. Mine also like cockroaches, so try those when you have the chance. Its all about experimenting to see what you colonies prefer eating