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Photo#502442
Tiny shiny and black ants - Monomorium minimum

Tiny shiny and black ants - Monomorium minimum
Rancocas, Rancocas Nature Center NJAS, Burlington County, New Jersey, USA
September 18, 2010
Size: Maybe around 1.5 - 2 mm?
More images available.

Temnothorax longispinosus?

Moved
Agree on the ID. I'm sure Richard meant to say that the antennal club is 3-segmented (though 2-segmented in the closely related Solenopsis). This shows it well.

In addition to the propodeal spines and lack of antennal club, T. longispinosus is a bit larger than these (2.5 vs. 2 mm) and is one of the "acorn ants", also nesting in leaf litter, hollow dead twigs on the ground, and occasionally in old beetle burrows and under bark of living trees, but not in open sandy ground.

Monomorium minimum - workers
Lack of propodaeal spines and conspicuously two-segmented antennal club are distinctive vs similarly shaped Temnothorax sp.

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