Cryptocephalus castaneus
In 3 days ~10% in a week ~20%
Cryptocephalus castaneus is a species of case-bearing leaf beetle in the family Chrysomelidae. It is found in North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Los Angeles | 🇺🇸 United States | |
| 2 | Sacramento | 🇺🇸 United States | |
| 3 | San Francisco | 🇺🇸 United States | |
| 4 | San Diego | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Chestnut-Colored Cryptocephalus sighting in San Francisco on a given day, based on 27 verified sightings from GBIF citizen-science data. It is the 320th 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Chestnut-Colored Cryptocephalus in San Francisco on a given day, so our monthly data shows no clear season.
Among the best
Of the 4 cities where we can rate Chestnut-Colored Cryptocephalus sightings, San Francisco ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Los Angeles (United States, under 5%) and Sacramento (United States, under 5%).
Same family: Chrysomelidae
The closest relatives of the Chestnut-Colored Cryptocephalus that you can see in San Francisco (family Chrysomelidae, Leaf Beetles) are Spotted Cucumber Beetle (about 10%), Bronze Beetle (about 10%) and Australian Tortoise Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chestnut-Colored Cryptocephalus is recorded against all the insects logged in San Francisco (27 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.
