Psyllobora borealis
In 3 days ~20% in a week ~30%
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 |
With luck
About 10% of wildlife watchers report a Western Fairy Lady Beetle sighting in Portland on a given day, based on 51 verified sightings from GBIF citizen-science data. It is the 122nd most-seen of the 507 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
May to August
In those months about 10% of wildlife watchers report a Western Fairy Lady Beetle in Portland on a given day, against under 5% in September to April, the lowest months. Those are among Portland's driest months, with about 40 mm of rain a month against 250 mm in December.
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.
Among the best
Of the 4 cities where we can rate Western Fairy Lady Beetle sightings, Portland ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Vancouver (Canada, about 10%) and Seattle (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 Portland (51 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.
