CLOSED: We see these flies in our basement, help!

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Kayla29 Toronto, Canada Feb 14, 2015

I'm hoping these harmless but we need to figure out what they are and where they are coming from. We will see them time from time in our basement. Our basement is unfinished.

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Flapdoodle Minot, ND Feb 14, 2015

Could be a winged ant, but image not clear enough to say much more...

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Kayla29 Toronto, Canada Feb 23, 2015

I have another picture

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Kayla29 Toronto, Canada Feb 23, 2015

A closer look...

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porkpal Richmond, TX Feb 23, 2015

They look like ants to me.

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Flapdoodle Minot, ND Feb 24, 2015

Definitely ants - the geniculate antennae are clearly seen in the later images.

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Kayla29 Toronto, Canada Feb 24, 2015

Thank you! What kind of ants though? Are they wimged carpenter ants? Or citronella? Should I be calling pest control?

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Flapdoodle Minot, ND Feb 24, 2015

They do look like one of the yellow ants in the genus Lasius, such as Lasius interjectus (aka citronella ant) - see http://www.alexanderwild.com/Ants/Taxonomic-List-of-Ant-Genera/Lasius/i-Gfw2W6N
They do not appear to be serious pests, and calling in a pest controller should not be necessary - http://ento.psu.edu/extension/factsheets/citronella-ants

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Kayla29 Toronto, Canada Feb 24, 2015

Thank you so much for the confirmation and for the links!! Very relieved! I was really worried this could be something else. I will try to locate the nest just for nuisance control!

Thanks again.

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