Rosalia funebris
In 3 days ~10% in a week ~20%
The Banded Alder Borer (Rosalia funebris) is a member of the very diverse family of longhorn beetles. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Bear Rainforest | 🇨🇦 Canada | |
| 2 | Olympic National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States | |
| 2 | Seattle | 🇺🇸 United States | |
| 3 | Vancouver | 🇨🇦 Canada | |
| 4 | Los Angeles | 🇺🇸 United States | |
| 5 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Banded Alder Borer sighting in Los Angeles on a given day, based on 41 verified sightings from GBIF citizen-science data. It is the 278th most-seen of the 851 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
July
In that month about 10% of wildlife watchers report a Banded Alder Borer in Los Angeles on a given day, against under 5% in August to June, the lowest months. That is one of Los Angeles's driest months, with almost no rain against 75 mm in February.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Banded Alder Borer sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 5
Of the 5 cities where we can rate Banded Alder Borer sightings, Los Angeles ranks 4th at under 5%. The best odds are in Portland (United States, about 10%), Seattle (United States, about 10%) and Vancouver (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Banded Alder Borer is recorded against all the insects logged in Los Angeles (41 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.
