Psyllobora borealis
In 3 days ~10%
Psyllobora borealis is a species of lady beetle in the family Coccinellidae and the genus Psyllobora. It is found in North America, where it has been recorded from Montana to New Mexico, west to southern British Columbia and southern California. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Bear Rainforest | 🇨🇦 Canada | |
| 2 | Olympic National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vancouver | 🇨🇦 Canada | |
| 2 | Seattle | 🇺🇸 United States | |
| 3 | Portland | 🇺🇸 United States | |
| 4 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Western Fairy Lady Beetle sighting in San Francisco on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 550th 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 Western Fairy Lady Beetle in San Francisco on a given day, so our monthly data shows no clear season.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Western Fairy Lady Beetle sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
4th of 4
Of the 4 cities where we can rate Western Fairy Lady Beetle sightings, San Francisco ranks 4th at under 5%. The best odds are in Vancouver (Canada, about 10%), Seattle (United States, about 10%) and Portland (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Western Fairy Lady Beetle is recorded against all the insects logged in San Francisco (8 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.
