Monomorium pharaonis
In 3 days ~10% in a week ~20%
The pharaoh ant (Monomorium pharaonis) is a small (2 mm) yellow or light brown, almost transparent ant notorious for being a major indoor nuisance pest, especially in hospitals. A cryptogenic species, it has now been introduced to virtually every area of the world, including Europe, the Americas, Australasia and Southeast Asia. It is a major pest in the United States, Australia, and Europe. The ant's common name is possibly derived from the belief that it was one of the Egyptian (pharaonic) plagues.
This species is polygynous—each colony contains many queens—leading to unique caste interactions and colony dynamics. This also allows the colony to fragment into bud colonies quickly. Pharaoh ants are a tropical species, but they also thrive in buildings almost anywhere, even in temperate regions provided central heating is present.
Pharaoh workers are about 2.9–4.5 millimetres (3⁄16 in) long. They are light yellow to reddish brown in color with a darker abdomen. Pharaoh ant workers have a non-functional stinger used to generate pheromones. The petiole (narrow waist between the thorax and abdomen) has two nodes and the thorax has no spines. Pharaoh ant eyesight... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Saint Petersburg | 🇷🇺 Russia | |
| 2 | Toronto | 🇨🇦 Canada | |
| 3 | Miami | 🇺🇸 United States | |
| 4 | Montreal | 🇨🇦 Canada | |
| 5 | San Diego | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Pharaoh Ant sighting in Saint Petersburg on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 220th most-seen of the 448 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
October
In that month about 10% of wildlife watchers report a Pharaoh Ant in Saint Petersburg on a given day, against under 5% in November to September, the lowest months.
Yes
Of the 5 cities where we can rate Pharaoh Ant sightings, Saint Petersburg has the highest daily chance: under 5%. Next come Toronto (Canada, under 5%) and Miami (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Pharaoh Ant is recorded against all the insects logged in Saint Petersburg (14 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.
