Cenopis diluticostana
In 3 days ~10% in a week ~20%
Sparganothis diluticostana, the spring dead-leaf roller, is a species of moth of the family Tortricidae. It is found in North America from Quebec to Florida, west to Texas and Nebraska and north to Minnesota and Ontario.
The wingspan is 12–14 mm. Adults are on wing from April to August. The larvae feed on the leaves of Fraxinus species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Montreal | 🇨🇦 Canada | |
| 4 | Chicago | 🇺🇸 United States | |
| 5 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Spring Dead-Leaf Roller Moth sighting in Boston on a given day, based on 20 verified sightings from GBIF citizen-science data. It is the 512th most-seen of the 1200 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.
July
In that month about 10% of wildlife watchers report a Spring Dead-Leaf Roller Moth in Boston on a given day, against under 5% in August to June, the lowest months.
Among the best
Of the 5 cities where we can rate Spring Dead-Leaf Roller Moth sightings, Boston ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Toronto (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Spring Dead-Leaf Roller Moth is recorded against all the insects logged in Boston (20 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.
