Argyrotaenia franciscana
In 3 days ~10% in a week ~20%
Argyrotaenia franciscana, the orange tortrix or apple skinworm, is a moth of the family Tortricidae. It is found from California north to Oregon and Washington. The length of the forewings is 5.6-9.9mm. There are at least two, but sometimes more generations per year. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States | |
| 2 | San Francisco | 🇺🇸 United States | |
| 3 | San Diego | 🇺🇸 United States | |
| 4 | Los Angeles | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Orange Tortrix Moth sighting in San Francisco on a given day, based on 23 verified sightings from GBIF citizen-science data. It is the 336th most-seen of the 737 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 an Orange Tortrix Moth in San Francisco on a given day, so our monthly data shows no clear season.
Among the best
Of the 4 cities where we can rate Orange Tortrix Moth sightings, San Francisco ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Portland (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Orange Tortrix Moth is recorded against all the insects logged in San Francisco (23 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.
