Arhopalus asperatus
In 3 days ~10% in a week ~20%
Arhopalus asperatus is a species of beetle in the family Cerambycidae. It was described by John Lawrence LeConte in 1859. The beetles vary from 18 to 33 mm in length, and have antennae of around 50% to 75% of the body length. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Francisco | 🇺🇸 United States | |
| 2 | Los Angeles | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Arhopalus asperatus sighting in San Francisco on a given day, based on 72 verified sightings from GBIF citizen-science data. It is the 177th most-seen of the 737 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.
September and October
In those months about 10% of wildlife watchers report an Arhopalus asperatus in San Francisco on a given day, against under 5% in November to August, the lowest months. Those are among San Francisco's driest months, with about 15 mm of rain a month against 110 mm in December.
Yes
Of the 2 cities where we can rate Arhopalus asperatus sightings, San Francisco has the highest daily chance: under 5%. Next come Los Angeles (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Arhopalus asperatus is recorded against all the insects logged in San Francisco (72 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.
