2 Bugs That Look Like Longhorn Crazy Ants
Think you found longhorn crazy ants? These 2 bugs are the ones most often mistaken for them. Each entry below shows how to tell the difference.
How to recognize a real longhorn crazy ant
- Long legs and antennae relative to its body
- Erratic, zigzag running instead of straight trails
- Grayish sheen from fine body hairs
1. Argentine Ant
A small, light-to-dark brown ant that forms huge, cooperating supercolonies. Wide, busy trails often stream into kitchens during hot or rainy weather.
How it differs:
- Color: Longhorn Crazy Ants are black and gray; Argentine ants are brown.
- Where found: look for longhorn crazy ants in the kitchen and in lawns and grass; Argentine ants turn up in the kitchen and in gardens and on plants.
- Signature feature: Longhorn Crazy Ants: long legs and antennae relative to its body. Argentine Ants: uniform light-brown body with one flat node.
2. Little Black Ant
A tiny, jet-black, shiny ant that nests in lawns, under rocks and in wall voids. Workers form narrow trails to sweets, grease and meats.
How it differs:
- Color: Longhorn Crazy Ants are black and gray; little black ants are black.
- Signature feature: Longhorn Crazy Ants: long legs and antennae relative to its body. Little Black Ants: very small, glossy jet-black body.
Side-by-side comparison
| Longhorn Crazy Ant | Argentine Ant | Little Black Ant | |
|---|---|---|---|
| Group | Ants | Ants | Ants |
| Scientific name | Paratrechina longicornis | Linepithema humile | Monomorium minimum |
| Size | 2.3–3 mm | 2–3 mm | 1.5–2 mm |
| Colors | Black and Gray | Brown | Black |
| Legs | 6 legs | 6 legs | 6 legs |
| Wings | No | No | No |
| Bites or stings | No | No | No |
| Risk | Nuisance | Nuisance | Nuisance |
| Key feature | Long legs and antennae relative to its body | Uniform light-brown body with one flat node | Very small, glossy jet-black body |
Quick identification checklist
- Count the legs. Longhorn Crazy Ants have 6 legs.
- Check for wings. Longhorn Crazy Ants are usually seen without wings.
- Measure it. Longhorn Crazy Ants are 2.3–3 mm (up to about 0.12 in).
- Look for the signature feature: long legs and antennae relative to its body.
- Note where you found it. Longhorn Crazy Ants are usually in the kitchen and in lawns and grass.
When you'll see longhorn crazy ants
Longhorn Crazy Ants are most active in spring, summer and fall. In spring, overwintering adults become active and many species lay their first eggs. Summer heat speeds up development, so populations can grow quickly. In fall, many bugs look for shelter, and some move toward or into buildings.
Typical places to check: kitchen and lawn or grass.
About ants
The longhorn crazy ant is one of the ants. Ants live in colonies ruled by one or more egg-laying queens. The workers you see are sterile females foraging for the rest of the colony, so killing visible ants rarely solves anything. Winged ants, called swarmers, appear when a mature colony sends out new kings and queens.
Bait works because workers carry it back and share it with the queen and larvae. Repellent sprays can scatter the colony and make the problem harder to fix.
Are longhorn crazy ants or their lookalikes dangerous?
- Longhorn Crazy Ant: Crazy ants rarely bite and don't sting; their sheer numbers make them a nuisance.
- Argentine Ant: Argentine ants don't sting and rarely bite; they protect aphids and scale insects on garden plants.
- Little Black Ant: Little black ants have a sting too weak to feel; they are a nuisance only.
Frequently asked questions
What bug looks like a longhorn crazy ant?
The closest lookalikes are Argentine ant and little black ant.
How can I be sure it's a longhorn crazy ant?
Look for these features: long legs and antennae relative to its body, erratic, zigzag running instead of straight trails and grayish sheen from fine body hairs.
Are longhorn crazy ants dangerous?
Crazy ants rarely bite and don't sting; their sheer numbers make them a nuisance.