Tachystola hemisema
In 3 days ~10% in a week ~20%
Tachystola hemisema is a moth of the family Oecophoridae. It is native to Australia, but is an invasive species in New Zealand and the United States, probably imported with Australian plants. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Auckland | 🇳🇿 New Zealand | |
| 2 | Melbourne | 🇦🇺 Australia | |
| 3 | Perth | 🇦🇺 Australia | |
| 4 | San Diego | 🇺🇸 United States | |
| 5 | San Francisco | 🇺🇸 United States | |
| 6 | Los Angeles | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Tachystola hemisema sighting in San Francisco on a given day, based on 73 verified sightings from GBIF citizen-science data. It is the 190th 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 a Tachystola hemisema in San Francisco on a given day, so our monthly data shows no clear season.
5th of 6
Of the 6 cities where we can rate Tachystola hemisema sightings, San Francisco ranks 5th at under 5%. The best odds are in Auckland (New Zealand, about 10%), Melbourne (Australia, about 10%) and Perth (Australia, under 5%).
GBIF citizen-science records
It is estimated from how often the Tachystola hemisema is recorded against all the insects logged in San Francisco (73 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.
