Montrose, Laurens County, Georgia, USA June 13, 2010
I questioned this behaviour in the Forum and was informed that it is termed "roosting". In this case the wasps were gathering together for the night. There are two main branches (in the same pine tree) these guys/gals gather on, now. The one is very over-grown and the wasps hide deep. This one is much more open, consequently, I was able to get some photos. However, these wasps are very sensitive to my presence and if I stand nearby (less than say, 10 ft.), they will break up and fly off. So, now I will have to wait till tomorrow night and take some more shots. BTW, the grouping is such that there are 6-8 individuals in each. If more try to hog their way in, they are given very short shrift. Evidently, there is a limit, even with a large branch. I have no clue to the sex/sexes of these wasps.
Contributed by Jon Hart on 13 June, 2010 - 10:44pm Last updated 14 August, 2010 - 6:49am
Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.