Acronicta lithospila
In 3 days ~10% in a week ~20%
Acronicta lithospila, the streaked dagger moth, is a moth of the family Noctuidae described by Augustus Radcliffe Grote in 1874. It is found in Canada (Nova Scotia, New Brunswick, Quebec, and Ontario) and the United States (including Georgia, Maryland and Oklahoma).
The wingspan is about 35 mm. Adults are on wing from June to August depending on the location. The larvae feed on hickory, oak, and chestnut. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Streaked Dagger sighting in Boston on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 583rd 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 Streaked Dagger in Boston on a given day, against under 5% in August to June, the lowest months.
Only Boston, in our data
Boston is the only city on Wallace's Line with enough records to rate Streaked 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 Streaked Dagger is recorded against all the insects logged in Boston (15 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.
