I know Randee on here didn't hibernate his P. imparis last year, and he sent me an email back in early March after what he said was a "tremendously long break" they finally laid eggs. Unfortunately he's pretty crazy busy with work, so haven't heard from him for a couple months so not sure short term if he saw any negative/positive impact to not hibernating.
"During the warmest months of the year, nest entrances are sealed and the colony enters an estivation period with no presence aboveground. Seasonal foraging activity and estivation of Prenolepis imparis varies with latitude, with colonies in the northern part of the range being active throughout the year with the exception of the summer months (Talbot 1943). "
Source: https://edis.ifas.uf...IN/IN116800.pdf
Here's the older PDF from a study in 1987 which I think has been feeding a lot of the later articles: http://www.bio.fsu.e...ions/1987-3.pdf
Location of P. imparis does look to be a factor for behaviour a bit. On page 146 (page 4 of the PDF), there's a chart that says the Florida P. imparis seem to lay in the Sept time frame in "a single pulse of brood." Not sure if lines up with other locations or not, especially as our artificial environments we keep them in could skew that.
Edited by noebl1, October 10 2017 - 4:07 AM.