Acraspis erinacei
In 3 days ~10% in a week ~20%
Acraspis erinacei, the hedgehog gall wasp, is a species of gall wasp in the family Cynipidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chicago | 🇺🇸 United States | |
| 2 | New York City | 🇺🇸 United States | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 5 | Toronto | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Hedgehog Gall Wasp sighting in New York City on a given day, based on 63 verified sightings from GBIF citizen-science data. It is the 321st most-seen of the 1623 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.
June
In that month about 10% of wildlife watchers report a Hedgehog Gall Wasp in New York City on a given day, against under 5% in July to May, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Hedgehog Gall 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 5 cities where we can rate Hedgehog Gall Wasp sightings, New York City ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Chicago (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Hedgehog Gall Wasp is recorded against all the insects logged in New York City (63 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.
