Acraspis villosa
In 3 days ~10% in a week ~20%
Acraspis villosa is a gall-forming wasp from the family Cynipidae. It can be found in Canada and the US. It forms galls on Quercus macrocarpa. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report an Acraspis villosa sighting in Chicago on a given day, based on 31 verified sightings from GBIF citizen-science data. It is the 326th most-seen of the 978 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.
November
In that month about 10% of wildlife watchers report an Acraspis villosa in Chicago on a given day, against under 5% in December to October, the lowest months.
Yes
Of the 2 cities where we can rate Acraspis villosa sightings, Chicago has the highest daily chance: under 5%. Next come Toronto (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Acraspis villosa is recorded against all the insects logged in Chicago (31 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.
