Vol·XXI · 21 Spp · Field-Verified
13
SPEC·013NO STING
Structural InvaderInvasive Tramp

Ghost Ant

Tapinoma melanocephalum
Specimen Plate013
Ghost Ant (Tapinoma melanocephalum)
Lat. view
1.3–1.5 mm; dark head and thorax

A tiny tramp ant with a striking two-tone body, dark head and thorax, ghostly pale gaster and legs, that vanishes against light surfaces; one of the most common indoor ants in south Florida.

Worker
1.3–1.5 mm
Sting
No.
Habitat
Warm indoor voids
Diet
Sweets and honeydew dominant.
Range
Established outdoors in Florida
§01

Identification

Very small (1.3–1.5 mm) with a dark brown to black head and thorax abruptly transitioning to a translucent, almost colorless gaster and legs. Single hidden petiole node. Faint coconut-like odor when crushed (related to odorous house ant). The two-tone color is the fastest field ID in the field.

§02

Biology & Colony Structure

Polygyne and polydomous; colonies of several hundred to a few thousand workers split easily into multiple satellite nests across a single structure. Reproduces primarily by budding. Strongly attracted to moisture, bathrooms, kitchens, condensate lines, and potted plants are typical interior nest sites.

§03

Pest Status & Significance

Persistent kitchen and bathroom invader in Florida and the Gulf, often misidentified because workers nearly disappear on light counters. Not medically important but very difficult to eradicate because of budding behavior and concealed nests in plants and voids.

§04

Ghost Ant Control Strategy

Sweet liquid bait at every trail, refreshed often; supplement with non-repellent perimeter band and aggressive management of indoor potted plants (the most common interior reservoir).

§05

Recommended Baits & Active Ingredients

Product names are representative of the active-ingredient class and intended for licensed PMPs. Always read and follow the label; rates, sites, and restrictions vary by formulation and state registration.

ProductActiveFormUse
Gourmet Liquid Ant BaitBorate 1%LiquidPrimary tool, sucrose acceptance is excellent.
Terro PCO LiquidBorax 5.4%LiquidCost-effective alternative.
Optigard Ant GelThiamethoxam 0.010%GelCrack-and-crevice indoor placements.
Termidor SCFipronil 9.1%SprayNon-repellent perimeter band for outdoor populations in Florida and the Gulf.
§06

Non-Chemical & Cultural Control

Remove or aggressively manage indoor potted plants. Fix bathroom and kitchen plumbing leaks. Caulk switch plates and wall penetrations.
§07

Pitfalls, Do Not Do This

⚠ Caution
Pyrethroid sprays scatter colonies into new satellites, same trap as Pharaoh and odorous house ant.