Ancistrocerus gazella
In 3 days ~10% in a week ~30%
Ancistrocerus gazella, known as the European potter wasp or European tube wasp, is a species of potter wasp. As an imago (adult), the female collects as many as 20 caterpillars for each nest, which consists of a single cell. Her larval offspring then feed on these inside the nest, which is sealed with mud arranged by her. As adults, they eat nectar and aphid honeydew. Males cannot sting, and the sting of a female is not painful. They can be found on windows, foraging for nectar on flowers, or searching out small cracks or holes in which to nest. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Auckland | 🇳🇿 New Zealand | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Melbourne | 🇦🇺 Australia | |
| 4 | Toronto | 🇨🇦 Canada | |
| 5 | Philadelphia | 🇺🇸 United States | |
| 6 | New York City | 🇺🇸 United States | |
| 7 | Montreal | 🇨🇦 Canada | |
| 8 | Detroit | 🇺🇸 United States | |
| 9 | Chicago | 🇺🇸 United States | |
| 10 | Washington | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a European Tube Wasp sighting in Toronto on a given day, based on 140 verified sightings from GBIF citizen-science data. It is the 172nd most-seen of the 1689 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.
July to October
In those months about 10% of wildlife watchers report a European Tube Wasp in Toronto on a given day, against under 5% in November to June, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most European Tube Wasp sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 13 cities where we can rate European Tube Wasp sightings, Toronto ranks 4th at about 10%, level with the leaders once rounded. The best odds are in Auckland (New Zealand, about 10%), Boston (United States, about 10%) and Melbourne (Australia, about 10%).
GBIF citizen-science records
It is estimated from how often the European Tube Wasp is recorded against all the insects logged in Toronto (140 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.
