Drosophila immigrans
In 3 days ~10%
Drosophila immigrans is a species of vinegar fly in the family Drosophilidae. Drosophila immigrans is a member of the Immigrans-tripunctata radiation of the subgenus Drosophila. It is related to the Drosophila quinaria and Drosophila testacea species groups, and the fellow Immigrans species group member Drosophila albomicans. Drosophila immigrans has been used in evolutionary studies to understand how viruses evolve with their hosts. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Auckland | 🇳🇿 New Zealand | |
| 2 | Vienna | 🇦🇹 Austria | |
| 3 | Melbourne | 🇦🇺 Australia | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | San Diego | 🇺🇸 United States | |
| 6 | San Francisco | 🇺🇸 United States | |
| 7 | Los Angeles | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Immigrant Fruit Fly sighting in San Francisco on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 577th most-seen of the 737 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 an Immigrant Fruit Fly in San Francisco on a given day, so our monthly data shows no clear season.
Among the best
Of the 7 cities where we can rate Immigrant Fruit Fly sightings, San Francisco ranks 6th at under 5%, level with the leaders once rounded. The best odds are in Auckland (New Zealand, under 5%), Vienna (Austria, under 5%) and Melbourne (Australia, under 5%).
GBIF citizen-science records
It is estimated from how often the Immigrant Fruit Fly is recorded against all the insects logged in San Francisco (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.
