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ant generations - Camponotus pennsylvanicus - female

ant generations - Camponotus pennsylvanicus - Female
Cross Plains, Dane County, Wisconsin, USA
May 2, 2012
This little colony of Carpenter ants was found under some loose bark of a log on the ground. I took some photos and replaced the bark.

Moved from Carpenter Ants.

Black Carpenter Ant (Camponotus pennsylvanicus)
At this early stage, the young colony was still located in the founding chamber, dug out by the foundress queen last spring.
Most likely the larger larvae had overwintered together with the mother and the first batch of adult workers. Contrary to e.g. Formica ants, Carpenter ants have so-called "hibernating brood".

Do all the queens (I'm assumi
Do all the queens (I'm assuming the large winged ants are queens) emerge at the same time in the spring? This afternoon I was in a local park and the large, winged queens were showing up in large numbers in several different areas of the park. We had heavy rains in the morning and then the temperature went up into the 80's so it was very hot and humid all afternoon.

Alates (i.e., winged reproductives) of a same species...
do indeed tend to "swarm" roughly at the same time in a given locality. And as indicated by several recent posts on BG, this is currently the swarming time of C. pennsylvanicus and its sister species C. chromaiodes. Here in Western Europe too, large Carpenter Ant species (C. herculeanus, C. ligniperda) usually swarm during late afternoon, while Formica mound-ants do so before noon.


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