Brachymyrmex patagonicus
In 3 days ~10% in a week ~30%
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 |
Rare
Under 5% of wildlife watchers report a Dark Rover Ant sighting in Los Angeles on a given day, based on 248 verified sightings from GBIF citizen-science data. It is the 98th most-seen of the 851 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
March–April, August and December–January
In those months about 10% of wildlife watchers report a Dark Rover Ant in Los Angeles on a given day, against under 5% in February, May–July and September–November, the lowest months. Those are among Los Angeles's wettest months, with about 40 mm of rain a month against almost none in June.
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.
8th of 13
Of the 13 cities where we can rate Dark Rover Ant sightings, Los Angeles ranks 8th at under 5%. The best odds are in Mesa (United States, about 10%), Las Vegas (United States, about 10%) and Phoenix (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Dark Rover Ant is recorded against all the insects logged in Los Angeles (248 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.
