Diabrotica cristata
In 3 days ~10% in a week ~20%
Diabrotica cristata, the black diabrotica, is a species of skeletonizing leaf beetle in the family Chrysomelidae. It is found in North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chicago | 🇺🇸 United States | |
| 2 | Minneapolis [Saint Paul] | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Black Diabrotica sighting in Chicago on a given day, based on 25 verified sightings from GBIF citizen-science data. It is the 371st 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Black Diabrotica in Chicago on a given day, so our monthly data shows no clear season.
Yes
Of the 2 cities where we can rate Black Diabrotica sightings, Chicago has the highest daily chance: under 5%. Next come Minneapolis [Saint Paul] (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Black Diabrotica is recorded against all the insects logged in Chicago (25 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.
