Acronicta interrupta
In 3 days ~10%
Acronicta interrupta, the interrupted dagger moth, is a moth of the family Noctuidae. The species was first described by Achille Guenée in 1852. It is found across southern Canada south of the boreal forest, from New Brunswick west to eastern Alberta, south to Georgia, Nebraska and Arizona.
The wingspan is 35–42 mm. Adults are on wing from April to August or September depending on the location. There are two or more generations per year in the south and one in the north. The larvae feed on apple, apricot, birch, cherry, crabapple, elm, hawthorn, hop-hornbeam, mountain-ash, oak, plum and willow. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chicago | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Interrupted Dagger sighting in Chicago on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 814th most-seen of the 978 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report an Interrupted Dagger in Chicago on a given day, so our monthly data shows no clear season.
Only Chicago, in our data
Chicago is the only city on Wallace's Line with enough records to rate Interrupted Dagger sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Interrupted Dagger is recorded against all the insects logged in Chicago (6 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.
