Eucosma giganteana
In 3 days ~10% in a week ~20%
Eucosma giganteana, the giant eucosma moth, is a species of moth of the family Tortricidae. It is found in the United States, where it has been recorded from North Carolina to Florida, Minnesota to Texas, as well as in Pennsylvania, North Dakota and New Mexico.
The wingspan is 34–38 mm. Adults are on wing in January and from April to September. The larvae feed on Silphium perfoliatum. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 2 | Chicago | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Giant Eucosma Moth sighting in Chicago on a given day, based on 26 verified sightings from GBIF citizen-science data. It is the 405th 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 Giant Eucosma Moth in Chicago on a given day, so our monthly data shows no clear season.
Among the best
Of the 2 cities where we can rate Giant Eucosma Moth sightings, Chicago ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Minneapolis [Saint Paul] (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Giant Eucosma Moth is recorded against all the insects logged in Chicago (26 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.
