Myrmecia forficata
In 3 days ~40% in a week ~70%
Myrmecia forficata, commonly known as the inchman ant, is a species of bull ant that is native to Australia. The ants are recorded in the south eastern part of the country, but are most common in the Australian Alps at elevations above 300m but can be found down to sea level around Melbourne and in Tasmania.
The inchman is the most venomous of the bulldog ants, ranging from about 15 to 25 mm (0.6 to 1.0 in) long, but less aggressive than the Jack jumper ant. These ants are purplish-brown, with a black abdomen. Their large size gave them their name, although most are slightly smaller than the traditional inch (25.4 mm). Their nests may be inconspicuously hidden under a rock or in a small hole.
As with many species of bulldog ants, the inchman are usually solitary when they forage, though they live in colonies like most ants. Inchman are carnivores and scavengers. They sting their victims with venom analogous to stings of wasps, bees, and fire ants. Their venom is some of the most powerful in the insect world. The reputation for being the most venomous ant is possibly due to the tendency of the toxin to induce anaphylaxis which can be fatal in some people.
The symptoms of the stings of the ants are similar to stings of the fire ants. The reaction is local; swelling, reddening and fever, followed by formation of a blister. The heart rate increases, and blood pressure falls rapidly. In about 3% of cases, the sting causes anaphylaxis. Treatment is very similar to wasp and bee stings. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Freycinet National Park | 🇦🇺 Australia | |
| 2 | Wilsons Promontory National Park | 🇦🇺 Australia | |
| 3 | Great Otway National Park | 🇦🇺 Australia | |
| 4 | Grampians National Park | 🇦🇺 Australia | |
| 5 | Kosciuszko National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report an Inchman Ant sighting in Grampians National Park on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 51st most-seen of the 148 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
February
In that month about 30% of wildlife watchers report an Inchman Ant in Grampians National Park on a given day, against under 5% in January and June–August, the lowest months. That is one of Grampians National Park's driest months, with about 20 mm of rain against 85 mm in October.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Inchman Ant sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
4th of 5
Of the 5 parks where we can rate Inchman Ant sightings, Grampians National Park ranks 4th at about 10%. The best odds are in Freycinet National Park (Australia, about 30%), Wilsons Promontory National Park (Australia, about 30%) and Great Otway National Park (Australia, about 20%).
Same genus: Myrmecia
The closest relatives of the Inchman Ant that you can see in Grampians National Park (genus Myrmecia, Bull Ants) are Black-Scaped Bull Ant (about 40%), Jack Jumper Ant (about 40%) and Inch Ant (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Inchman Ant is recorded against all the insects logged in Grampians National Park (15 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
