Isthmura bellii
Silhouette: C. Camilo Julián-Caballero · PhyloPic
In 3 days ~70% in a week ~90%
Isthmura bellii, commonly known as Bell's false brook salamander or Bell's salamander, is a species of salamander in the family Plethodontidae. It is endemic to Mexico and occurs mostly along the western and southern margins of the Mexican Plateau, with isolated populations elsewhere.
Its natural habitats are pine and pine-oak forests at high elevation, as well as forest edges and grazed areas. It tolerates habitat modification and is also found in degraded forests, coffee plantations, rural gardens, and close to urbanized and highly disturbed areas. This terrestrial species is typically found beneath logs, rocks, waste timber, brush piles, and within leaf litter. Once common, this species has disappeared from many places. The reasons for this decline are unclear, although habitat loss is occurring throughout its range.
Isthmura bellii is terrestrial and nocturnal. Isthmura bellii is a member of Plethodontidae, also known as the lungless salamanders. Some research indicates that Isthmura bellii is a species complex, meaning that there are multiple species grouped under this name with unresolved evolutionary relationships. Isthmura sierraoccidentalis... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Reserva de la Biosfera Mariposa Monarca | 🇲🇽 Mexico |
More parks will be added in future updates.
Possible
About 30% of wildlife watchers report a Bell's False Brook Salamander sighting in Reserva de la Biosfera Mariposa Monarca on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
May and August
In those months about 50% of wildlife watchers report a Bell's False Brook Salamander in Reserva de la Biosfera Mariposa Monarca on a given day, against under 5% in January and June, the lowest months. Those are among Reserva de la Biosfera Mariposa Monarca's wettest months, with about 180 mm of rain a month against 20 mm in January.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Bell's False Brook Salamander 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 Reserva de la Biosfera Mariposa Monarca, in our data
Reserva de la Biosfera Mariposa Monarca is the only park on Wallace's Line with enough records to rate Bell's False Brook Salamander sightings: about 30% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Bell's False Brook Salamander is recorded against all the amphibians logged in Reserva de la Biosfera Mariposa Monarca (7 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.
