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Photo#263217
unknown ant - Lasius neoniger - female

unknown ant - Lasius neoniger - Female
baiting Hollow, Suffolk County, New York, USA
September 14, 2008
Size: large
This ant, which looks to me that it might be a Carpenter Queen, was found in the sink last Sept.
I recently (last few weeks) have a few (not reproductives) roaming around inside.
Do they like to come inside this time of year and not necessarily be causing damage or do I need to run out for some nematodes.

Images of this individual: tag all
unknown ant - Lasius neoniger - female unknown ant - Lasius neoniger - female

Moved
Moved from Lasius.

That is Lasius neoniger. Not
That is Lasius neoniger. Not a carpenter ant but new queens do fly in August and September. Unlikely to be the same species that you are seeing in your house now.

As colonies wake up in the spring they start foraging and your home is likely the first place they find because of the warmth. Assuming the species isn't anything invasive they should change their foraging habits to outside. (there usually isn't enough humidity in our homes for them to comfortably forage, that's why they are most often seen in the kitchen, bathroom, greenhouse areas.) If you're doing some sort of construction, and disturbing their normal foraging area they may once again forage for food in your home.

 
Thankyou! MrILoveTheAnts
I like ants also, but don;t yet know enough about them.
Here is another recent one as yet not ID'd. I don't think it is the same.


 
I have just commented on this
I have just commented on this one. I saw it go through the ID request when it was new but figured I'd leave it to an actual expert.

It is in the same Subfamily, Formicinae, but not the same genera. That is a Camponotus.

 
Thanks for Formicinae ID.
I am relieved to learn that my present ants are harmless and I don't need nematodes.

I see in the guide that Lasius neoniger is referred to as Lasius cf. neoniger and does not have a page. What does the cf. refer to?

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