Bactrocera oleae
In 3 days ~10%
The olive fruit fly (Bactrocera oleae) is a species of fruit fly which belongs to the subfamily Dacinae. It is a phytophagous species whose larvae feed on the fruit of olive trees, hence the common name. It is considered a serious pest in the cultivation of olives.
Until 1998, the fly had not been detected in the United States, and its range coincided with the range of the olive tree in the Eastern Hemisphere: northern, eastern, and southern Africa, Southern Europe, the Canary Islands, India, and western Asia. In the Western Hemisphere, it is currently restricted to California, Baja California, and Sonora. The olive fruit fly was first detected in North America infesting olive fruits on landscape trees in Los Angeles County in November 1998. It can now be found throughout the state of California.
In the final years of the 18th century, Italian scientist Giuseppe Maria Giovene (1753–1837), in his work Avviso per la distruzione dei vermi che attaccano la polpa delle olive (1792), provided some suggestions for peasants to effectively destroy the fly musca oleae, which infested the pulp of olive trees.
This species is associated with plants... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lisbon | 🇵🇹 Portugal | |
| 2 | San Francisco | 🇺🇸 United States | |
| 3 | Los Angeles | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Olive Fruit Fly sighting in San Francisco on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 416th 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 Olive Fruit Fly in San Francisco on a given day, so our monthly data shows no clear season.
Among the best
Of the 3 cities where we can rate Olive Fruit Fly sightings, San Francisco ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Lisbon (Portugal, under 5%).
GBIF citizen-science records
It is estimated from how often the Olive Fruit Fly is recorded against all the insects logged in San Francisco (14 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.
