Anthophora urbana
In 3 days ~10% in a week ~20%
Anthophora urbana, the urbane digger bee, is a species of anthophorine bee in the family Apidae. It is found in Central America and North America. These solitary bees are black with gray hairs, including gray bands around the abdomen. They reach 10–13 millimetres (0.39–0.51 in) in length.
A subspecies of this bee (A. urbana clementina) can be found on San Clemente Island. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yosemite National Park | 🇺🇸 United States | |
| 2 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States | |
| 3 | Saguaro National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sacramento | 🇺🇸 United States | |
| 2 | Los Angeles | 🇺🇸 United States | |
| 3 | Salt Lake City | 🇺🇸 United States | |
| 4 | San Francisco | 🇺🇸 United States | |
| 5 | San Diego | 🇺🇸 United States | |
| 6 | San Antonio | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Urbane Digger Bee sighting in San Francisco on a given day, based on 110 verified sightings from GBIF citizen-science data. It is the 155th 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.
July and August
In those months about 10% of wildlife watchers report an Urbane Digger Bee in San Francisco on a given day, against under 5% in September to June, the lowest months. Those are among San Francisco's driest months, with almost no rain against 110 mm in December.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Urbane Digger Bee sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 6 cities where we can rate Urbane Digger Bee sightings, San Francisco ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Sacramento (United States, under 5%), Los Angeles (United States, under 5%) and Salt Lake City (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Urbane Digger Bee is recorded against all the insects logged in San Francisco (110 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.
