Brachymyrmex patagonicus
In 3 days ~40% in a week ~70%
Brachymyrmex patagonicus, also known as the black rover ant, is a species of Formicine ant native to Mexico, Central America, South America, and invasive in the United States and Europe. They were first reported in St. Tammany Parish, Louisiana in 1978 from a single colony collected in 1976. It is believed that the species was introduced through New Orleans, which is a common entry point for many tropical species, but other locations such as Mobile, Alabama, or Pensacola, Florida, are also likely. For many years B. patagonicus, B. musculus, and B. obscurior were misidentified as being separate species but after a comparison of specimens from the Louisiana State University Arthropod Collection (LSUC), it was found that all three were the same species. B. patagonicus is considered a nuisance pest due to their tendency to infest man-made structures but have received a lack of attention because they do not bite, sting, or carry disease.
Dark rover ants are small brown ants that are typically less than 2.5 millimeters in length. Worker ants in this species range from 1.0mm to 2.0mm, whereas queens are around 3.0mm. Males are around 1.0mm in length. The antennae of the... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Saguaro National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mesa | 🇺🇸 United States | |
| 2 | Las Vegas | 🇺🇸 United States | |
| 3 | Phoenix | 🇺🇸 United States | |
| 4 | Austin | 🇺🇸 United States | |
| 5 | San Antonio | 🇺🇸 United States | |
| 6 | Dallas | 🇺🇸 United States | |
| 7 | Houston | 🇺🇸 United States | |
| 8 | Los Angeles | 🇺🇸 United States | |
| 9 | San Diego | 🇺🇸 United States | |
| 10 | Guangzhou | 🇨🇳 China |
With luck
About 10% of wildlife watchers report a Dark Rover Ant sighting in Mesa on a given day, based on 87 verified sightings from GBIF citizen-science data. It is the 25th most-seen of the 232 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.
June
In that month about 30% of wildlife watchers report a Dark Rover Ant in Mesa on a given day, against about 10% in August to April, the lowest months. That is one of Mesa's driest months, with almost no rain against 35 mm in January.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Dark Rover Ant sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 13 cities where we can rate Dark Rover Ant sightings, Mesa has the highest daily chance: about 10%. Next come Las Vegas (United States, about 10%) and Phoenix (United States, about 10%).
Same family: Formicidae
The closest relatives of the Dark Rover Ant that you can see in Mesa (family Formicidae, Ants) are Southern Fire Ant (about 20%), Longhorn Crazy Ant (about 10%) and Red Harvester Ant (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dark Rover Ant is recorded against all the insects logged in Mesa (87 verified sightings), 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.
