Herveo plump toad (Orsornophryne percrassa)

Description and biology

Adults are generally small to medium in size with a rounded, robust build and relatively short limbs. The skin is granular or slightly warty, which is typical of many true toads. Coloration tends toward browns, greys or mottled tones that help individuals blend into leaf litter and moss. Little detailed natural-history information is available for this species; however, like many montane amphibians, it is adapted to moist microhabitats and likely breeds during wetter periods when temporary streams and seepages are available.

Habitat and distribution

The Herveo plump toad occupies subtropical and tropical montane forests (cloud forests) and adjacent high-altitude grasslands or páramo-like areas (high-altitude grasslands). Its range is restricted to isolated patches of suitable habitat in the Colombian Andes, where local populations are separated by valleys and human-modified landscapes. It depends on intact, humid vegetation and undisturbed ground cover for shelter and foraging.

Threats and conservation

Population trends are downward for many montane amphibians, and the Herveo plump toad faces pressures primarily from habitat loss and fragmentation caused by agriculture, livestock grazing, timber extraction and expansion of settlements. Additional risks may include water pollution and the potential impact of emerging diseases known to affect amphibians. Conservation measures center on protecting remaining forest patches and highland wetlands, managing land use in surrounding areas, and monitoring populations to detect declines early.

Characteristics and identification

• Stout, plump body typical of the genus (Bufonidae relatives).
• Granular skin with cryptic coloration for camouflage.
• Terrestrial habits, often found in leaf litter or near seepage sites (preferred habitat).

Notable facts and research needs

Because the Herveo plump toad occupies restricted, fragmented habitats, it serves as an indicator of montane ecosystem health. Further field surveys and ecological study are needed to clarify its reproductive biology, population size and precise distribution, and to inform effective conservation planning. For more information on taxonomic details and conservation actions, see specialist resources and regional assessments (further reading).