From the IUCN Red List Species Account:

Range Description

This species is known from only two locations in Mexico: Omiltemi State Park, in the Sierra Madre del Sur, in Guerrero; and Agua del Obispo, in north-western Guerrero. It is a montane species and the type locality is at about 2,400m asl.

Habitat and Ecology

It occurs in montane forest and requires the presence of slow or moderate streams for breeding.

Population

This species has not been recorded since 1978, and it is feared that the species might now be extinct. It seems to be extirpated in the Omiltemi State Park, since a recent one-year survey of this site yielded no individuals; there is no recent information on its status at Agua del Obispo.

Population Trend

Decreasing

Major Threats

Although generally affected by habitat loss, the most likely cause of the extinction of the population in the Omiltemi State Park is the piping of water from streams within the species' range to provide the city of Chilpancingo with water. However, it might also have disappeared due to chytridiomycosis, since other montane stream-breeding amphibians have also disappeared from suitable habitats without any apparent reason.

Conservation Actions

A survey of the Omiltemi State Park is recommended in order to confirm whether or not the species has indeed disappeared from this area. Another survey of Agua del Obispo is required to check the population status in this locality. If the species still persists in Agua del Obispo, a recovery programme might be needed and perhaps from here individuals could be taken and reintroduced to the Omiltemi area. Protection of the remaining habitat at Agua del Obispo is needed. This species is listed as "Endangered" by the Mexican government.

Citation

Georgina Santos-Barrera, Oscar Flores-Villela 2004. Lithobates omiltemanus. In: IUCN 2014