Centrodera spurca
In 3 days ~10%
Centrodera spurca, the yellow Douglas fir borer, is a species of flower longhorn in the beetle family Cerambycidae. It is found in North America. 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 |
Rare
Under 5% of wildlife watchers report a Yellow Douglas-Fir Borer sighting in San Francisco on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 404th 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 a Yellow Douglas-Fir Borer 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 Yellow Douglas-Fir Borer 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 Yellow Douglas-Fir Borer is recorded against all the insects logged in San Francisco (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.
