Diabrotica barberi
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Northern Corn Rootworm sighting in Minneapolis [Saint Paul] on a given day, based on 21 verified sightings from GBIF citizen-science data. It is the 282nd most-seen of the 672 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.
August
In that month about 10% of wildlife watchers report a Northern Corn Rootworm in Minneapolis [Saint Paul] on a given day, against under 5% in September to July, the lowest months. That is one of Minneapolis [Saint Paul]'s wettest months, with about 110 mm of rain against 20 mm in January.
2nd of 2
Of the 2 cities where we can rate Northern Corn Rootworm sightings, Minneapolis [Saint Paul] ranks 2nd at under 5%. The best odds are in Montreal (Canada, about 10%).
GBIF citizen-science records
It is estimated from how often the Northern Corn Rootworm is recorded against all the insects logged in Minneapolis [Saint Paul] (21 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.
