Messor pergandei
In 3 days ~10% in a week ~30%
Veromessor pergandei is a species of harvester ant native to the Southwestern United States, especially the deserts of southeastern California. It has also been identified in the Baja California peninsula of Mexico. It was first described by Gustav Mayr, who named it Aphaenogaster pergandei. It can also be referred to as a black harvester ant or desert harvester ant, although these common names have also been applied to other species.
V. pergandei has a head of equal length and width, with very large mandibles. It has short white or yellow hair and a large thorax. Males typically measure about 8.5 mm (0.33 in) and females about 10 mm (0.39 in). However, individual size can vary based on factors such as availability of food and interspecific competition. The species is named after American myrmecologist Theodore Pergande. The genus was for some time synonymized under Messor but has been split out based on a 2015 study.
Like other harvester ants, V. pergandei gathers fruits and seeds for food. The seeds of perennial shrubs such as Larrea tridentata and Ambrosia dumosa are included in its diet. Messor pergandei at AntWeb... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Death Valley National Park | 🇺🇸 United States | |
| 2 | Joshua Tree National Park | 🇺🇸 United States | |
| 3 | Saguaro National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mesa | 🇺🇸 United States | |
| 2 | Las Vegas | 🇺🇸 United States | |
| 3 | Phoenix | 🇺🇸 United States | |
| 4 | Los Angeles | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Messor pergandei sighting in Las Vegas on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 86th most-seen of the 111 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.
February, September and December
In those months about 10% of wildlife watchers report a Messor pergandei in Las Vegas on a given day, against under 5% in January, March–August and October–November, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Messor pergandei sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 4
Of the 4 cities where we can rate Messor pergandei sightings, Las Vegas ranks 2nd at under 5%. The best odds are in Mesa (United States, about 10%).
Same family: Formicidae
The closest relatives of the Messor pergandei that you can see in Las Vegas (family Formicidae, Ants) are Argentine Ant (about 20%), Southern Fire Ant (about 20%) and Rough Harvester Ant (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Messor pergandei is recorded against all the insects logged in Las Vegas (6 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.
