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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » Aculeata - Ants, Bees and Stinging Wasps » Ants (Formicoidea) » Ants (Formicidae) » Formicinae » Formicini » Wood ants, mound ants, & field ants (Formica) » sanguinea group (Formica sanguinea group) » Formica pergandei
Photo#967286
swarming ant - Formica pergandei
Copyright © 2014 John Sankey

swarming ant - Formica pergandei
Ottawa, Ontario, Canada
July 29, 2014
Size: 5 mm long
a couple hundred of these ants exploded all over my driveway early afternoon, running every which way

Images of this individual: tag all
swarming ant - Formica pergandei swarming ant - Formica pergandei
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Contributed by John Sankey on 29 July, 2014 - 5:02pm
Last updated 31 July, 2014 - 12:59pm

Moved
The "swarm" was a brood-robbing party by these slavemaker ants. They are good at this behavior, but not at most regular ant work, so they steal (usually) pupae of other Formica spp. to build a worker force. If you had found their nest, you would have noted two differently colored ants co-inhabiting it.
… James C. Trager, 31 July, 2014 - 12:59pm login or register to post comments

 
many thanks James
a new ant species for my garden
… John Sankey, 31 July, 2014 - 2:42pm login or register to post comments

Moved for expert attention
Moved from ID Request.
… Ken Wolgemuth, 29 July, 2014 - 7:01pm login or register to post comments

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