This species is known only from north-central Oaxaca in southern Mexico, at 2,300 m asl. It is known from one threat-defined location and its extent of occurrence (EOO) is 4,106 km2.
Habitat and Ecology
This species inhabits pine and pine-oak forests at high elevations. It is terrestrial and found beneath logs and rocks. It is presumed to reproduce by direct development.
It was known to be common to very common 30 years ago (in the 1970s), but is now rarely found (D. Wake pers. comm. 2005). An observation of this species was recorded in the town of Santa Maria Huitepec in 2009, and locals in Ayulta reported seeing it on a regular basis (Lamoreux et al. 2015). Due to ongoing decline in the extent and quality of habitat, the population is suspected to be decreasing.
Habitat loss due to small-holder agricultural activities is a threat to this species. However it does not appear to be at a scale large enough to completely explain the previous observed declines within the population.
This species is not known from any protected areas.
Habitat protection is required.
Research is needed to determine the reason for the apparent population declines in suitable habitat.
Red List Status
Listed as Endangered because its extent of occurrence (EOO) is 4,106 km2, it occurs in one threat-defined location, and there is ongoing decline in the extent and quality of its' habitat in Oaxaca.
This species was previously within the genus Pseudoeurycea but has recently been moved to Isthmura (Dubois and Raffaëlli 2012). It was resurrected from synonymy with Isthmura bellii (as Pseudoeurycea bellii in Parra-Olea et al. 2005).
IUCN SSC Amphibian Specialist Group 2018. Isthmura boneti. The IUCN Red List of Threatened Species 2018: e.T61906A53989244. http://dx.doi.org/10.2305/IUCN.UK.2018-1.RLTS.T61906A53989244.en .Downloaded on 23 February 2019