The locust coqui (''Eleutherodactylus locustus'') is a species of
frog
A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-f ...
in the family
Eleutherodactylidae
The Eleutherodactylidae are a family of direct-developing frogs native to northern South America, the Caribbean, and southernmost North America. They are sometimes known under the common name rain frogs. Formerly the subfamily Eleutherodactylina ...
endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...
to
Puerto Rico
Puerto Rico (; abbreviated PR; tnq, Boriken, ''Borinquen''), officially the Commonwealth of Puerto Rico ( es, link=yes, Estado Libre Asociado de Puerto Rico, lit=Free Associated State of Puerto Rico), is a Caribbean island and Unincorporated ...
. Its natural
habitat
In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...
s are subtropical or tropical moist lowland
forest
A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' ...
s and subtropical or tropical moist
montane forest
Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial f ...
s. ''E. locustus'' has suffered a population decline of more than 80% due to introduced predators and amphibian chytrid disease. Scientists believe amphibian chytrid disease may be exacerbated by climate change - warmer temperatures in dry, moist habitats, causing stress that may lead to greater susceptibility to the disease.
Description
The locust coqui is a small species, approximately 0.8 inches (20 mm) in snout-vent length. It is brown overall, minutely variegated, with lighter brown or cream colors. A pair of externally concave lines is almost always visible on the back, but a variable-width line along the vertebrae may or may not be present. The eyes are large and protuberant, and the angles at the side of the snout are rounded and indistinct.
Habits
Like other
Eleutherodactylidae
The Eleutherodactylidae are a family of direct-developing frogs native to northern South America, the Caribbean, and southernmost North America. They are sometimes known under the common name rain frogs. Formerly the subfamily Eleutherodactylina ...
, ''E. locustus'' does not have interdigital membranes, so is not well adapted to swimming; instead, it has pads on its toes that allow it to adhere to leaves and branches. The species uses internal fertilization – the fertilized eggs undergo direct development. The tadpole stage occurs entirely within the egg, rather than as a free-living tadpole. Thus, a tiny but fully functional froglet hatches directly from the egg. ''E. locustus'' females deposit four to six clutches of about 28 eggs each per year, mostly during the rainy season, with a development period of 26 days. Males guard the eggs to keep them moist, and remain in the nest for a few days after they emerge. The call of ''E. locustus'' is a short whistle, followed by a series of clicks.
Habitat
The locust coqui is restricted to the interior uplands of eastern Puerto Rico at elevations of 895 to 3,444 ft (273 to 1,050 m) above sea level. A terrestrial species, it occurs in mesic broadleaf, subtropical, moist lowland or subtropical moist montane forests.
Because an unexplained major decline in the abundance of this species has occurred in the last two decades, even in relatively undisturbed forests (such as
El Yunque), this animal is rarely seen, but an easily accessible forest location sustains an ''E. locustus'' population. On the fern-covered slope above the Big Tree Nature Trail's roadside parking lot, the calls of locust coquis can be heard beginning in the late afternoon, just before sunset.
2008 Wildlife Facts – Locust Coqui
USDA.gov
See also
*Fauna of Puerto Rico
The fauna of Puerto Rico is similar to other island archipelago faunas, with high endemism, and low, skewed taxonomic diversity. Bats are the only extant native terrestrial mammals in Puerto Rico. All other terrestrial mammals in the area were in ...
*List of endemic fauna of Puerto Rico
This is a list of the endemic fauna of Puerto Rico. This list is sorted in alphabetical order by the scientific name of the species, which are in parentheses.
Birds
*Yellow-shouldered blackbird (''Agelaius xanthomus'')
*Puerto Rican parrot (' ...
*List of amphibians and reptiles of Puerto Rico
A ''list'' is any set of items in a row. List or lists may also refer to:
People
* List (surname)
Organizations
* List College, an undergraduate division of the Jewish Theological Seminary of America
* SC Germania List, German rugby union ...
References
{{Taxonbar, from=Q1883725
Eleutherodactylus
Vertebrates of Puerto Rico
Amphibians described in 1920
Taxonomy articles created by Polbot