The spiny giant frog or Norton's robber frog (''Eleutherodactylus nortoni'') is a species of

frog A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-frog" '' Triadobatrachus'' is ...

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 Eleutherodactyl ...

. It is named after James W. Norton who accompanied

Albert Schwartz Albert Schwartz may refer to: * Albert Schwartz (swimmer) * Albert Schwartz (zoologist) * Al Schwartz (writer), American screenwriter, television producer, and director See also * Albert Schwarz Albert Solomonovich Schwarz (; russian: А. С. Ш� ...

in his 1974 expedition to Hispaniola and collected the

holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of seve ...

Distribution

It is

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 els ...

Hispaniola Hispaniola (, also ; es, La Española; Latin and french: Hispaniola; ht, Ispayola; tnq, Ayiti or Quisqueya) is an island in the Caribbean that is part of the Greater Antilles. Hispaniola is the most populous island in the West Indies, and t ...

and known from the

Massif de la Hotte The Massif de la Hotte is a mountain range in southwestern Haiti, on the Tiburon Peninsula. About 2.5 million years ago, Massif de la Hotte was separated from the Massif de la Selle by a deep, wide sea channel, and formed a separate island. This ...

Massif de la Selle In geology, a massif ( or ) is a section of a planet's crust that is demarcated by faults or flexures. In the movement of the crust, a massif tends to retain its internal structure while being displaced as a whole. The term also refers to a ...

, and

Sierra de Baoruco The Bahoruco Mountain Range—Sierra de Bahoruco (or Sierra de Bahoruco) is a mountain range located in the far southwestern region of the Dominican Republic. It is within Pedernales, Independencia, Barahona, and Bahoruco Provinces. A large part ...

, occurring in both the

Dominican Republic The Dominican Republic ( ; es, República Dominicana, ) is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean region. It occupies the eastern five-eighths of the island, which it shares with ...

and

Haiti Haiti (; ht, Ayiti ; French: ), officially the Republic of Haiti (); ) and formerly known as Hayti, is a country located on the island of Hispaniola in the Greater Antilles archipelago of the Caribbean Sea, east of Cuba and Jamaica, and ...

Description

The five adult males in the

type series In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the ...

measure in snout–vent length. The colouration is green with darker green, irregular blotches. These blotches become nearly diagonal laterally. The fore- and hindlimbs have subcircular blotches; the thighs have three bars. The male advertisement call is a series of about five rising

glissando In music, a glissando (; plural: ''glissandi'', abbreviated ''gliss.'') is a glide from one pitch to another (). It is an Italianized musical term derived from the French ''glisser'', "to glide". In some contexts, it is distinguished from the ...

trills, ending in a semi-whistle.

Habitat and conservation

The species' 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 sinkhole caves in upland broadleaf forest and forest remnants at elevations of

above sea level Height above mean sea level is a measure of the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as '' orthometric heights''. The ...

. Males are calling from tall vegetation and rocks. Once considered locally not rare, ''Eleutherodactylus nortoni'' is now uncommon and assessed as " critically endangered". It is threatened by

habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ...

caused by logging and agriculture. It is known from the

Pic Macaya Pic Macaya (Macaya Peak) is the second-highest mountain in Haiti (after Pic la Selle), rising to an elevation of above sea level. It is located in the Massif de la Hotte, northwest of Les Cayes and west of Port-au-Prince. The mountain is loca ...

and

La Visite National Park La Visite National Park (french: Parc National La Visite) is one of the two largest national parks of the Republic of Haiti. La Visite is a part of the Massif de la Selle mountain range. Its highest peak is 2275 meters in elevation. The park cover ...

s in Haiti and from

Sierra de Bahoruco National Park The Sierra de Bahoruco National Park is an environmentally protected national park located in the South-western region of Dominican Republic. It was created in 1983 by Presidential Decree (No. 1315/83) during the presidency of Salvador Jorge Bla ...

in the Dominican Republic, but habitat degradation is occurring in these areas too.

References

{{Taxonbar, from=Q2276548 nortoni Endemic fauna of Hispaniola Amphibians of the Dominican Republic Frogs of Haiti Amphibians described in 1976 Taxa named by Albert Schwartz (zoologist) Taxonomy articles created by Polbot