Overview

Distribution

Range Description

This species can be found on the Pacific slopes from Oaxaca and Chiapas, Mexico, to central Guatemala, at 1,500-2,000m asl.
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Ecology

Habitat

Southern Pacific Dry Forests Habitat

This taxon is found in the Southern Pacific dry forests ecoregion, which is situated along the southeastern versant of the Sierra Madre del Sur Mountains including the Pacific Ocean coastal plain. These forests are a key locus of endemism for butterflies, and has the greatest diversity of scorpions and spiders in the entirety of Mexico. This ecoregion is classified in the Tropical and Subtropical Dry Broadleaf Forests biome. The Southern Pacific dry forests exhibit a moderate to high faunal species richness; for example, there are a total of 744 vertebrate taxa recorded in the ecoregion, with a particularly large number of endemic reptiles.

The ecoregion elevation ranges from sea level to 1400 metres. The climate is tropical and dry, with precipitation levels of 800 millimetres (mm) per annum. There is an extended arid season, which factor drives the prevalence of deciduous vegetation. The forests grow chiefly on shallow, well-drained soils derived from limestone. Closer to the base of the Sierra Madre del Sur Mountains, the soils are more rocky, and are derived from igneous rocks.

The dominant plant species include Mauto (Lysiloma divaricatum), Bursera excelsa and Fragrant Bursera (B. fagaroides), which are typically found in association with Pochote (Ceiba aesculifolia), Comocladia engleriana, and Trichilia americana. In the Mexican state of Michoacán, the macro plant species more generally in evidence are Ficus insipida, F. pertusa, Breadnut (Brosimum alicastrum), Licania arborea, Sideroxylon capiri and Elephant Ear (Enterolobium cyclocarpum).

There are a number of anuran species present in the ecoregion, including: Blunt-toed Chirping Frog (Eleutherodactylus modestus VU); Cloud Forest Stream Frog (Ptychohyla euthysanota NT), found from southeast Oaxaca to Guatemala and eastern El Salvador; Matuda's Spikethumb Frog  (Plectrohyla matudai VU). A special status caecilian found in the ecoregion is the Mexican Caecilian (Dermophis mexicanus VU), a fossorial species that can attain lengths up to sixty centimetres. A special status salamander found in the ecoregion is the Sierra Juarez Salamander (Pseudoeurycea juarezi CR), a near-endemic known only between Cerro Pelón and Vista Hermosa in the Sierra de Juarez, north-central Oaxaca. The White-lipped Peeping Frog (Eleutherodactylus albolabris CR), a near-endemic known chiefly from Agua del Obispo, central Guerrero.

The Southern Pacific dry forests contain numerous reptilian taxa, including the following endemics: Bocourt's Anole (Norops baccatus); Taylor's Anole (Norops taylori), known only to  Puerto Marquez area, in northern Acapulco, Guerrero; Simmons' Anole (Anolis simmonsi), restricted to the vicinity of Pinotepa Nacional, Oaxaca; Stegneger's Blackcollar Spiny Lizard (Sceloporus stejnegeri), restricted to the Pacific versant in the state of Guerrero, Mexico; Red Earth Snake (Geophis russatus), found in a very narrow range outside of Putla, Oaxaca; Sierra Mije Earth Snake (Geophis anocularis), known only from around Totontepec on the Atlantic versant of the Sierra Mixe, Oaxaca; Ramirez`s Hooknose Snake (Ficimia ramirezi), restricted to the Pacific versant of the Isthmus of Tehuantepec, Niltepec, Oaxaca; Halberg's Cloud Forest Snake (Cryophis hallbergi), found only in northern Oaxaca, at Sierra de Juarez and Sierra Mazateca; Isthmian Earth Snake (Geophis isthmicus), known only from the vicinity of Tehuantepec, Mexico; the endemic Macdougall's Spiny Lizard (Sceloporus macdougalli).

Characteristic mammalian fauna include the endemic Oaxacan Pocket Gopher (Orthogeomys cuniculus), restricted to several sites on the Isthmus of Tehuantepec, Oaxaca. Other mammals seen in the ecoregion include the: Lesser Long-nosed Bat (Leptonycteris yerbabuenae VU), Tropical Hare (Lepus flavigularis EN), restricted to Salina Cruz, Oaxaca to the extreme west of  Chiapas; Greater Bulldog Bat (Noctilio leporinus), Coati (Nasua narica), Buller’s Pocket Gopher (Pappogeomys bulleri), Javelina (Tayassu tajacu), and Mexican Long-tongued Bat (Choeronycteris mexicana NT).

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Habitat and Ecology

Habitat and Ecology
This species inhabits pine-oak and cloud forests. It is closely associated with low vegetation along small mountain streams. Reproduction occurs via larval development in streams.

Systems
  • Terrestrial
  • Freshwater
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
VU
Vulnerable

Red List Criteria
B1ab(iii)

Version
3.1

Year Assessed
2004

Assessor/s
Georgina Santos-Barrera, Luis Canseco-Márquez, Manuel Acevedo, Antonio Muñoz Alonso

Reviewer/s
Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)

Contributor/s

Justification
Listed as Vulnerable because its Extent of Occurrence is less than 20,000km2, its distribution is severely fragmented, and there is continuing decline in the extent and quality of its forest habitat in Guatemala and Mexico.
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Population

Population
It is common to abundant in Chiapas and Guatemala.

Population Trend
Decreasing
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Threats

Major Threats
The major threat is habitat loss and disturbance due to agriculture, logging, and human settlement. Chytridiomycosis is a potential future threat, given the impact that it has had on some other members of the genus in the region.
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Management

Conservation Actions

Conservation Actions
It is present in Reserva de la Biósfera El Triunfo in Mexico, and is presumably present in several protected areas in Guatemala. Improved legal protection of the extensive forested areas in Los Chimalapas is needed.
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Wikipedia

Plectrohyla matudai

Plectrohyla matudai is a species of frog in the Hylidae family. It is found in Guatemala, Mexico, and possibly Honduras. Its natural habitats are subtropical or tropical moist montane forests and rivers. It is threatened by habitat loss.

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