Catocala minuta
In 3 days ~10% in a week ~20%
Catocala minuta, the little underwing, is a moth of the family Erebidae. The species was first described by William Henry Edwards in 1864. It is found in the US from New York to Florida and west to Texas and north to South Dakota, Indiana and Michigan.
The wingspan is 35–45 mm. Adults are on wing from June to August depending on the location. There is probably one generation per year. The larvae feed on Gleditsia aquatica and Gleditsia triacanthos. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Detroit | 🇺🇸 United States | |
| 2 | Chicago | 🇺🇸 United States | |
| 3 | Denver | 🇺🇸 United States | |
| 4 | Montreal | 🇨🇦 Canada | |
| 5 | Toronto | 🇨🇦 Canada | |
| 6 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 7 | Boston | 🇺🇸 United States | |
| 8 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Little Underwing sighting in Denver on a given day, based on 17 verified sightings from GBIF citizen-science data. It is the 206th most-seen of the 461 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 Little Underwing in Denver on a given day, against under 5% in August to June, the lowest months. That is one of Denver's wettest months, with about 60 mm of rain against 15 mm in January.
Among the best
Of the 8 cities where we can rate Little Underwing sightings, Denver ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Detroit (United States, under 5%) and Chicago (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Little Underwing is recorded against all the insects logged in Denver (17 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.
