Montseny brook newt

{{Short description|Species of salamander}}

{{Speciesbox

| name = Montseny brook newt

| image = BennyTrapp Montseny-Gebirgsmolch Calotriton arnoldi Montseny-Gebirge Spanien.jpg

| status = CR

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Salvador Carranza, Iñigo Martínez-Solano |date=2009 |title=Calotriton arnoldi |volume=2009 |page=e.T136131A4246722 |doi=10.2305/IUCN.UK.2009.RLTS.T136131A4246722.en |access-date=20 November 2021}}

| taxon = Calotriton arnoldi

| authority = Carranza and Amat, 2005{{Cite journal| doi = 10.1111/j.1096-3642.2005.00197.x| title = 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| journal = Zoological Journal of the Linnean Society| volume = 145| issue = 4| pages = 555–582| year = 2005| last1 = Carranza | first1 = S. | last2 = Amat | first2 = F. | doi-access = free}}

| range_map = Mapa_Calotriton_arnoldi.png

}}

The Montseny brook newt ({{langx|ca|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.{{cite web |url=http://research.amnh.org/vz/herpetology/amphibia/Amphibia/Caudata/Salamandridae/Pleurodelinae/Calotriton/Calotriton-arnoldi |title=Calotriton arnoldi Carranza and Amat, 2005 |author=Frost, Darrel R. |year=2014 |work=Amphibian Species of the World: an Online Reference. Version 6.0 |publisher=American Museum of Natural History |accessdate=9 March 2015}} 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).