Acrobat Ant — Quick ID for New Hampshire Homeowners
Acrobat ants are small, bicolored NH ants with a distinctive heart-shaped abdomen they raise up over their back when alarmed — the 'acrobat' tell. They nest in moisture-damaged wood and foam insulation, often reusing old carpenter-ant galleries. Confirm the acrobat pose here, then use the full ant guide for control and wood-damage assessment.
- Size
- 2.5–3.5 mm
- small; Crematogaster cerasi
- Color
- Bicolored brown/black
- gaster darker than head and thorax
- Signature tell
- Raises heart-shaped gaster over back
- the 'acrobat' pose
- NH status
- Resident
- medium prevalence; prefers damp wood structures
Is it an acrobat ant?
Acrobat ants are a small but distinctive ant species found in New Hampshire homes, most often in structures with moisture-damaged wood or foam insulation. The name gives away the key tell: when disturbed, workers raise their heart-shaped gaster up and over their thorax — a pose no other common NH house ant mimics.
Use this page to lock in the raised-abdomen tell and rule out carpenter ants. Once the ID is settled, the Ant FAQ hub above covers control strategy and the moisture problem that let them move in.
Quick acrobat ant ID
A few features separate acrobat ants from the other small dark ants common in NH homes.
Acrobat ant
- Scientific name
- Crematogaster cerasi
- Family
- Formicidae
- Size
- 2.5–3.5 mm
- Coloration
- Bicolored: light brown to reddish head and thorax, darker (brown to black) heart-shaped gaster
- Habitat
- Dead tree branches, bark, and structural wood — especially moisture-damaged framing, window and door surrounds, and foam insulation board
- Active season
- Year-round indoors; more active outdoors spring through fall
- Diet
- Honeydew from aphids and scales; insects; sweets
- Lifespan
- Workers live several months; queens can live multiple years
Found throughout New Hampshire; medium prevalence in structures with moisture-damaged wood or foam insulation.
The tells — key ID features
- Raises a heart-shaped (valentine) gaster up over the thorax when disturbed — the acrobat ant's signature pose that no other NH house ant mimics.
- Small and bicolored: lighter head and thorax, noticeably darker heart-shaped abdomen.
- Two-segment waist (petiole + postpetiole) with a distinctly heart-shaped gaster visible in profile.
- Follows moisture-damaged pathways — found in damp sills, foam insulation, and window frames — far smaller than carpenter ants.
Carpenter ant
How to tell — Carpenter ants are much larger (6–13 mm), solid black or black with reddish coloring, and have a single-humped thorax and oval gaster — they don't raise their abdomen.
Odorous house ant
How to tell — Odorous house ants smell like rotten coconut when crushed and have no visible waist node; acrobat ants are bicolored and perform the abdomen-raising display.
Signs of a problem
Look for the characteristic posture and the pathways they use.
Tiny bicolored ants elevating their heart-shaped abdomen over their back when disturbed
What it means — Acrobat ants — the raised-gaster pose is definitive.
Faint ant trails from foam insulation board, a water-stained window frame, or damp sill
What it means — Indoor colony in moisture-compromised wood or insulation.
Acrobat ant control in New Hampshire
Acrobat ants nest in moisture-damaged wood and foam insulation, which means addressing the water source is as important as the ant treatment. A recurring infestation in wall voids or damp framing warrants professional help. The full ant guide covers baiting strategy and moisture assessment.
When to call a pro
- Indoor trails recur after DIY treatment.
- Ants are found in wall voids, damp framing, or foam insulation board.
- You have corrected a moisture source but the ants persist.
Not sure it's a acrobat ant?
A licensed NH technician can confirm the species and tell you honestly whether it's a DIY fix or a job for a pro — free inspection, same-day service across Southern New Hampshire.
Frequently asked questions
Sources(2)
- [1]University of Florida IFAS — Acrobat Ants
biology, nest habits, heart-shaped gaster ID
extensionverified 2026-06-30 - [2]
Written & reviewed by
VerifiedDaniel Brady
NH-Licensed Pesticide Applicator · License #782664 (NHDAMF, RSA 430)
Daniel Brady is the New Hampshire–licensed applicator behind Anchor Pest Services, a family-owned pest control company serving the Manchester area since 2017.
Last updated 2026-06-30
New Hampshire pest control
Dealing with acrobat ants in your home?
Anchor Pest Services identifies and handles acrobat ant problems across southern and central New Hampshire. Family-owned since 2017, NH license #782664.
- NH-licensed applicators (#782664)
- Same-day service · free inspection
- Family-owned since 2017
Your next step
- Next step
Is Terro Liquid Ant Baits (T300) Safe for Pets?
Read the answer - What to do next
What Attracts Acrobat Ants to Your House?
Read the answer - What to do next
How to Get Rid of Acrobat Ants
Read the answer - Related guide
Carpenter Ant — Quick ID for New Hampshire Homeowners
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Ant Infestation Signs: How to Tell What Species You Have and How Bad It Is
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