Critically Endangered
Montseny Brook Newt
Calotriton arnoldi
Montseny Brook Newt is a salamander in the family Salamandridae (order Caudata) — Calotriton arnoldi, recorded as Critically Endangered.
Appearance
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. Dorsum is dark, chocolate-coloured.
Tail is 34–44 mm (1.3–1.7 in) and the maximum body size is 103 mm (4.1 in).
Range and habitat
It is endemic to the Montseny Massif (Catalan Pre-Coastal Range) in northeast Spain.
Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.
Breeding
Salamanders hide under logs, in seeps, or in caves. They do not commute across a dry valley.
Eggs and damp skin make amphibians quick to vanish from a drained wetland or a forest stripped of litter.
In crisis
Its population is supposed to be less than 1,500 individuals with an estimated rate of decline of 15% during the last 10 years as of 2021. 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".
Salamanders disappear when seeps are capped, caves are disturbed, or a pathogen moves through a mountain range.
Montseny Brook Newt is Critically Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.
Sources
Written for this catalog from the English Wikipedia article on Montseny Brook Newt, Wikidata item Q2670899. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.
