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Photo#847252
Protomognathus americanus - Temnothorax americanus - female

Protomognathus americanus - Temnothorax americanus - Female
Irwin Run, Allegheny County, Pennsylvania, USA
September 22, 2013
P. americanus worker (dark brown) with Temnothorax longispinosus (black) and T. curvispinosus (orange) host workers.

Images of this individual: tag all
Protomognathus americanus - Temnothorax americanus - female Protomognathus americanus - Temnothorax americanus - female Protomognathus americanus - Temnothorax americanus - female Protomognathus americanus - Temnothorax americanus - female Protomognathus americanus - Temnothorax americanus - female

Very interesting
Two species of Temnothorax present in the same nest together with their common tyrant: most often, doulotic species have only one host species.

 
Hosts
This species will also occasionally use T. ambiguus, though I don't think that species occurs at this particular site. I found a second colony of Protomognathus yesterday, and it also had longispinosus and curvispinosus present.

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