Diabrotica barberi
In 3 days ~10% in a week ~30%
Diabrotica barberi, the northern corn rootworm, is a species of skeletonizing leaf beetle in the family Chrysomelidae. It is found in North America. Adults feed on corn, and, when corn is unavailable, goldenrod pollen. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Montreal | 🇨🇦 Canada | |
| 2 | Minneapolis [Saint Paul] | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Northern Corn Rootworm sighting in Montreal on a given day, based on 69 verified sightings from GBIF citizen-science data. It is the 159th most-seen of the 926 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.
August
In that month about 10% of wildlife watchers report a Northern Corn Rootworm in Montreal on a given day, against under 5% in September to July, the lowest months.
Yes
Of the 2 cities where we can rate Northern Corn Rootworm sightings, Montreal has the highest daily chance: about 10%. Next come Minneapolis [Saint Paul] (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Northern Corn Rootworm is recorded against all the insects logged in Montreal (69 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.
