Acronicta hasta
In 3 days ~10% in a week ~20%
Acronicta hasta, the forked dagger moth, speared dagger moth, cherry dagger moth or dart dagger moth, is a moth of the family Noctuidae. The species was first described by Achille Guenée in 1852. It is found in North America in the eastern deciduous woodlands, ranging west across southern Saskatchewan and Alberta into central southern British Columbia, south to Tennessee, Wisconsin and Kansas.
Acronicta furcifera was considered a separate species until 1998, but is now considered a synonym. The wingspan is 35–45 mm. Adults are on wing from April to September depending on the location. There are two or more generations per year in the south and one or two in the north.
The larvae feed on cherry, oak and plum. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States | |
| 2 | Toronto | 🇨🇦 Canada | |
| 3 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Cherry Dagger sighting in Boston on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 695th 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Cherry Dagger in Boston on a given day, so our monthly data shows no clear season.
Yes
Of the 3 cities where we can rate Cherry Dagger sightings, Boston has the highest daily chance: under 5%. Next come Toronto (Canada, under 5%) and New York City (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Cherry Dagger is recorded against all the insects logged in Boston (12 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.
