Montseny brook newt

The Montseny brook newt (Catalan: tritó del Montseny), Calotriton arnoldi, is a species of salamander in the family Salamandridae. It is endemic to the Montseny Massif (Catalan Pre-Coastal Range) in northeast Spain.[3] Before it was formally described in 2005, it was mixed with the larger and more widely distributed Pyrenean brook salamander (Calotriton asper, formerly Euproctus asper).[2]

Montseny brook newt
BennyTrapp Montseny-Gebirgsmolch Calotriton arnoldi Montseny-Gebirge Spanien
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Urodela
Family: Salamandridae
Genus: Calotriton
C. arnoldi
Binomial name
Calotriton arnoldi
Carranza and Amat, 2005[2]
Mapa Calotriton arnoldi


Montseny brook newt males measure 56–59 mm (2.2–2.3 in) and females 57–59 mm (2.2–2.3 in) in snout–vent length. Tail is 34–44 mm (1.3–1.7 in) and the maximum body size is 103 mm (4.1 in). Dorsum is dark, chocolate-coloured. Head is strongly flattened. Body is oval in cross-section and with some dorsoventral compression.[2]

When handled, Montseny brook newts release a whitish, noxious, sticky, and very odorous skin secretion. This is probably a defence mechanism against predators.[2]

Habitat and conservation

Its natural habitats are oligotrophic, cold (under 15 °C) fast running rivers; it seems to be a strictly aquatic species. Its population its supposed to be less than 1,500 individuals with an estimated rate of decline of 15% during the last 10 years. The drying out of mountain streams, human alteration of its original habitat and the global warming are threats to this species. Because of this, the International Union for Conservation of Nature (IUCN) lists it as "critically endangered".[1]


  1. ^ a b Salvador Carranza; Iñigo Martínez-Solano (2009). "Calotriton arnoldi". The IUCN Red List of Threatened Species. IUCN. 2009: e.T136131A4246722. doi:10.2305/IUCN.UK.2009.RLTS.T136131A4246722.en. Retrieved 10 January 2018.
  2. ^ a b c d Carranza, S.; Amat, F. (2005). "Taxonomy, biogeography and evolution of Euproctus (Amphibia: Salamandridae), with the resurrection of the genus Calotriton and the description of a new endemic species from the Iberian Peninsula". Zoological Journal of the Linnean Society. 145 (4): 555–582. doi:10.1111/j.1096-3642.2005.00197.x.
  3. ^ Frost, Darrel R. (2014). "Calotriton arnoldi Carranza and Amat, 2005". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 9 March 2015.

External links


Calotriton, or the European brook newts, is a genus of newts native to the Pyrenees and central Catalonia (Catalan Pre-coastal Range). These amphibians were formerly placed within genus Euproctus, but the genus was resurrected in 2005. Instead of Euproctus, they seem more closely related to Triturus, their sister taxon.


Catalonia (; Catalan: Catalunya [kətəˈluɲə]; Aranese: Catalonha [kataˈluɲɔ]; Spanish: Cataluña [kataˈluɲa];) is an autonomous community in Spain on the northeastern corner of the Iberian Peninsula, designated as a nationality by its Statute of Autonomy. Catalonia consists of four provinces: Barcelona, Girona, Lleida, and Tarragona. The capital and largest city is Barcelona, the second-most populated municipality in Spain and the core of the sixth most populous urban area in the European Union. It comprises most of the territory of the former Principality of Catalonia (with the remainder Roussillon now part of France's Pyrénées-Orientales, Occitanie). It is bordered by France (Occitanie) and Andorra (Andorra la Vella, Encamp, Escaldes-Engordany, La Massana and Sant Julià de Lòria) to the north, the Mediterranean Sea to the east, and the Spanish autonomous communities of Aragon to the west and Valencia to the south. The official languages are Catalan, Spanish, and the Aranese dialect of Occitan.In the late 8th century, the counties of the March of Gothia and the Hispanic March were established by the Frankish kingdom as feudal vassals across and near the eastern Pyrenees as a defensive barrier against Muslim invasions. The eastern counties of these marches were united under the rule of the Frankish vassal, the count of Barcelona, and were later called Catalonia. In the 10th century the County of Barcelona became independent de facto. In 1137, the lineages of the rulers of Catalonia and rulers of the Kingdom of Aragon were united by marriage under the Crown of Aragon, when the King of Aragon married his daughter to the Count of Barcelona. The de jure end of Frankish rule was ratified by French and Aragonese rulers in the Treaty of Corbeil in 1258. The Principality of Catalonia developed its own institutional system, such as courts (parliament), and constitutions, becoming the base for the Crown of Aragon's naval power, trade and expansionism in the Mediterranean. In the later Middle Ages, Catalan literature flourished. During the last Medieval centuries natural disasters, social turmoils and military conflicts affected the Principality. Between 1469 and 1516, the king of Aragon and the queen of Castile married and ruled their kingdoms together, retaining all of their distinct institutions and legislation.

During the Franco-Spanish War (1635–1659), Catalonia revolted (1640–1652) against a large and burdensome presence of the royal army in its territory, being briefly proclaimed a republic under French protection. Within a brief period France took full control of Catalonia, until it was largely reconquered by the Spanish army. Under the terms of the Treaty of the Pyrenees in 1659, the Spanish Crown ceded the northern parts of Catalonia, mostly the County of Roussillon, to France. During the War of the Spanish Succession (1701–1714), the Crown of Aragon sided against the Bourbon Philip V of Spain; following Catalan defeat on 11 September 1714, Philip V, inspired by the model of France imposed a unifying administration across Spain, enacting the Nueva Planta decrees, suppressing the main Catalan institutions and rights like in the other realms of the Crown of Aragon. This led to the eclipse of Catalan as a language of government and literature, replaced by Spanish. Along the 18th century, Catalonia experienced economic growth, reinforced in the late quarter of the century when the Castile's trade monopoly with American colonies ended.

In the 19th century, Catalonia was severely affected by the Napoleonic and Carlist Wars. In the second half of the century, Catalonia experienced significant industrialisation. As wealth from the industrial expansion grew, Catalonia saw a cultural renaissance coupled with incipient nationalism while several workers movements appeared. In 1914, the four Catalan provinces formed a commonwealth, and with the return of democracy during the Second Spanish Republic (1931–1939), the Generalitat of Catalonia was restored as an autonomous government. After the Spanish Civil War, the Francoist dictatorship enacted repressive measures, abolishing Catalan self-government and banning the official use of the Catalan language again. After a first period of autarky, from the late 1950s through to the 1970s Catalonia saw rapid economic growth, drawing many workers from across Spain, making Barcelona one of Europe's largest industrial metropolitan areas and turning Catalonia into a major tourist destination. Since the Spanish transition to democracy (1975–1982), Catalonia has regained considerable autonomy in political, educational, environmental, and cultural affairs and is now one of the most economically dynamic communities of Spain. In the 2010s there has been growing support for Catalan independence.

On 27 October 2017, the Catalan Parliament declared independence from Spain following a disputed referendum. The Spanish Senate voted in favour of enforcing direct rule by removing the entire Catalan government and calling a snap regional election for 21 December. On 2 November of the same year, the Spanish Supreme Court imprisoned 7 former ministers of the Catalan government on charges of rebellion and misuse of public funds, while several others, including President Carles Puigdemont, fled to other European countries.

List of critically endangered amphibians

As of September 2016, the International Union for Conservation of Nature (IUCN) lists 545 critically endangered amphibian species, including 113 which are tagged as possibly extinct. 8.4% of all evaluated amphibian species are listed as critically endangered.

No subpopulations of amphibians have been evaluated by the IUCN.

Additionally 1567 amphibian species (24% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. While the category of data deficient indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed."This is a complete list of critically endangered amphibian species evaluated by the IUCN. Species considered possibly extinct by the IUCN are marked as such.

Montseny Massif

Montseny (Catalan pronunciation: [munˈsɛɲ]) is a mountain range west of the coastal hills north of Barcelona. It is part of the Catalan Pre-Coastal Range.


A newt is a salamander in the subfamily Pleurodelinae, also called eft during its terrestrial juvenile phase. Unlike other members of the family Salamandridae, newts are semiaquatic, alternating between aquatic and terrestrial habitats over the year, sometimes even staying in the water full-time. Not all aquatic salamanders are considered newts, however. More than 100 known species of newts are found in North America, Europe, North Africa and Asia. Newts metamorphose through three distinct developmental life stages: aquatic larva, terrestrial juvenile (eft), and adult. Adult newts have lizard-like bodies and return to the water every year to breed, otherwise living in humid, cover-rich land habitats.

Newts are threatened by habitat loss, fragmentation and pollution. Several species are endangered, and at least one species, the Yunnan lake newt, has gone extinct recently.


Salamandridae is a family of salamanders consisting of true salamanders and newts. Currently, 74 species (with more expected) have been identified in the Northern Hemisphere - Europe, Asia, the northern tip of Africa, and North America. Salamandrids are distinguished from other salamanders by the lack of rib or costal grooves along the sides of their bodies and by their rough skin. Their skin is very granular because of the number of poison glands. They also lack nasolabial grooves.

With a few exceptions, salamandrids have patterns of bright and contrasting colours, most of these are to warn potential predators of their toxicity. They have four well-developed limbs, with four toes on the fore limbs, and (in most cases) five toes on the hind limbs. They vary from 7 to 30 cm (3 to 12 in) in length.All species within the genus Lyciasalamandra are viviparous, meaning they give birth to live young, without a tadpole stage. There are some species within the genus Salamandra are known to be viviparous too. Some newts are neotenic, being able to reproduce before they are fully metamorphosed.

Tordera (river)

The Tordera (Catalan: La Tordera) is a river of Catalonia (Spain). It flows through the town of Tordera.

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