Eupsophulus castaneus
In 3 days ~10% in a week ~20%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Saguaro National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mesa | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Eupsophulus castaneus sighting in Saguaro National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 300th most-seen of the 354 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.
May
In that month about 10% of wildlife watchers report a Eupsophulus castaneus in Saguaro National Park on a given day, against under 5% in June to April, the lowest months. That is one of Saguaro National Park's driest months, with almost no rain against 55 mm in July.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Eupsophulus castaneus sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Only Saguaro National Park, in our data
Saguaro National Park is the only park on Wallace's Line with enough records to rate Eupsophulus castaneus sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Tenebrionidae
The closest relatives of the Eupsophulus castaneus that you can see in Saguaro National Park (family Tenebrionidae, Darkling Beetles) are Black Death-Feigning Beetle (about 10%), Eleodes longicollis (about 10%) and Obscure Darkling Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Eupsophulus castaneus is recorded against all the insects logged in Saguaro National Park (5 verified sightings from 2019 to 2026), 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.
