Chrysaster ostensackenella
In 3 days ~10% in a week ~20%
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 Boston on a given day, based on 15 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 Chrysaster ostensackenella in Boston on a given day, so our monthly data shows no clear season.
Yes
Of the 4 cities where we can rate Chrysaster ostensackenella sightings, Boston has the highest daily chance: under 5%. Next come Washington (United States, under 5%) and New York City (United States, under 5%).
Same family: Gracillariidae
The closest relatives of the Chrysaster ostensackenella that you can see in Boston (family Gracillariidae, Leaf Blotch Miner Moths) are White Pine Barkminer Moth (about 10%), Poison Ivy Leaf-Miner Moth (about 10%) and Locust Digitate Leafminer Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chrysaster ostensackenella 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.
