Chrysaster ostensackenella
In 3 days ~10%
Chrysaster ostensackenella is a moth of the family Gracillariidae. It is known from Ontario, Québec and Nova Scotia in Canada, and the United States (Illinois, Kentucky, New York, Maine, Maryland, Michigan, Vermont, Arizona, Massachusetts, North Carolina and Connecticut). It has also been recorded in 2015 from China and in 2017 from Korea, and in 2022 from Central Italy.
The wingspan is about 5 mm. The larvae feed on Robinia species, including Robinia hispida, Robinia neomexicana, Robinia pseudacacia and Robinia viscosa. They mine the leaves of their host plant. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States | |
| 2 | Washington | 🇺🇸 United States | |
| 3 | New York City | 🇺🇸 United States | |
| 4 | Toronto | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Chrysaster ostensackenella sighting in Toronto on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 1410th most-seen of the 1689 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 a Chrysaster ostensackenella in Toronto on a given day, so our monthly data shows no clear season.
Among the best
Of the 4 cities where we can rate Chrysaster ostensackenella sightings, Toronto ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Boston (United States, under 5%), Washington (United States, under 5%) and New York City (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Chrysaster ostensackenella is recorded against all the insects logged in Toronto (7 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.
