9
$\begingroup$

enter image description hereenter image description here

When I searched carpenter ant in Google, this looks kind of like some of the images. Some other images show reddish or winged ants and I have not seen any of those.

I've seen 3 or 4 of these big black ants in the last month we've been in our new house, wondering if I should be concerned.

$\endgroup$
  • $\begingroup$ Which country is this one from? $\endgroup$ – Nakx Apr 4 '18 at 23:56
  • $\begingroup$ @Nakx - this is in the United States, Minnesota. $\endgroup$ – Dallas Apr 5 '18 at 15:53
  • $\begingroup$ There are probably a few similar species that are hard to distinguish, but Camponotus pennsylvanicus is a common black Camponotus in the USA. $\endgroup$ – Nakx Apr 5 '18 at 23:32
11
$\begingroup$
  1. Correct color? Yes
  2. Proper antenna shape? Yes
  3. Thorax shape? difficult to assess
  4. Pinched waist? Yes
  5. Heart-shaped head? Yes

Generally speaking, carpenter ants are black/brown in color, have bent antennas, a pinched waist, a round thorax, and a heart-shaped head.

And to address your confusion from seeing winged ants when searching on Google.. winged carpenter ants appear a few years after a nest/colony has been formed, so if you're not seeing any wings, it may be a relatively new colony.

One last thing.. carpenter ants (should) have hair on their abdomen. From your pictures I'm not seeing any hairs.

Conclusion: I'm 90ish% confident that's a carpenter ant.

$\endgroup$
  • $\begingroup$ i think the rings might actually be made of fine hairs... sucks to see these things in a home we just bought $\endgroup$ – Dallas Jul 26 '17 at 12:28
  • $\begingroup$ That explanation is pretty close -- the more reflective rings on the abdomen are more or less hairless, the less reflective rings with enough fine hairs to scatter the light. $\endgroup$ – Arthur J Frost Jul 26 '17 at 17:06
2
$\begingroup$

Hmm, the picture that you shared has ants with a striped abdomen, a characteristic feature of Carpenter ants.

Wikipedia seems to confirm the same thing.

Carpenter ant

So I would say yes, this is a carpenter ant.

$\endgroup$
  • 1
    $\begingroup$ It is a Camponotus, but other genus also have striped abdomen (Formica for example). $\endgroup$ – Nakx Apr 4 '18 at 23:55

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.