{{Short description|Species of amphibian}} {{Italic title}} {{Speciesbox | image = | status = PE | status_system = IUCN3.1 | status_ref = <ref name=IUCN>{{cite iucn |author=IUCN SSC Amphibian Specialist Group |date=2018 |title=''Atelopus lynchi'' |volume=2018 |article-number=e.T54524A56601724 |doi=10.2305/IUCN.UK.2018-1.RLTS.T54524A56601724.en |access-date=3 November 2023 }}</ref> | taxon = Atelopus lynchi | authority = Cannatella, 1981<ref name="Cannatella 1981"/> | synonyms = | synonyms_ref = <ref name=Frost/> }}
'''''Atelopus lynchi''''', also known as '''Lynch's stubfoot toad'''<ref name=IUCN/><ref name=Frost/><ref name=AWE/> or '''Lynch's harlequin frog''',<ref name=iNaturalist/> is a species of toad in the family Bufonidae. It occurs in northern Ecuador (Carchi)<ref name=IUCN/><ref name=Frost/><ref name=AWE/> and in southern Colombia (Nariño, Cauca,<ref name=Frost/><ref name=LAC/> and possibly Valle del Cauca Department, the last one is in doubt<ref name=IUCN/><ref name=Frost/>). It occurs on the Pacific slope of the Cordillera Occidental, as the westernmost ranges of the Andes are known in both Colombia and in Ecuador.<ref name=Frost/><ref name=AWE/><ref name=LAC/> Prior to its description, it was confused with ''Atelopus longirostris''.<ref name="Cannatella 1981"/>
==Etymology== The specific name ''lynchi'' honors John D. Lynch,<ref name="Cannatella 1981"/> an American herpetologist<ref name="Beolens et al. 2013"/> and the collector of the holotype.<ref name="Cannatella 1981"/>
==Description== Adult males measure {{convert|35|-|41|mm|in|1|abbr=on}}<ref name="Cannatella 1981"/><ref name=AWE/><ref name="Ranas Arlequines"/> and adult females about {{convert|50|mm|in|1|abbr=on}} in snout–vent length.<ref name=AWE/><ref name="Ranas Arlequines"/> The head is longer than it is wide and is narrower than the body. The snout is long and protruding. No tympanum is present. The fingers have basal webbing, but no fringes. The toes are webbed. The digits have distinct pads. The coloration is rather undistinguished (in contrast to its often colorful congeners): dorsal coloration is brown with indistinct dull yellow markings and the venter is dull blue-gray. The iris is black with pale green area surrounding the pupil.<ref name="Cannatella 1981"/>
==Habitat and conservation== ''Atelopus lynchi'' lives on the border between lowland and montane rainforest<ref name=IUCN/> to montane rainforest<ref name=AWE/><ref name="Ranas Arlequines"/> to cloud forest<ref name="Ranas Arlequines"/> at elevations of {{convert|800|–|1410|m|abbr=on}} above sea level.<ref name=IUCN/><ref name=Frost/><ref name=AWE/><ref name="Ranas Arlequines"/> It is terrestrial, but presumably reproduces in rivers.<ref name=IUCN/> The type series was collected at night by streams, perched on leaves.<ref name="Cannatella 1981"/>
''Atelopus lynchi'' was last observed in Ecuador in 1984.<ref name=IUCN/><ref name=AWE/> IUCN does not recognize records from Colombia and has assessed the species as being possibly extinct. Threats to it include deforestation for agricultural development, logging, and human settlement, as well as pollution resulting from the fumigation of illegal crops. Its disappearance after 1984 is also consistent with chytridiomycosis.<ref name=IUCN/>
==References== {{Reflist|30em|refs= <ref name=AWE>{{cite web |url=https://bioweb.bio/faunaweb/amphibiaweb/FichaEspecie/Atelopus%20lynchi |title=''Atelopus lynchi'' |author=Coloma, L. A. |display-authors=etal |year=2022 |editor1=Ron, S. R. |editor2=Merino-Viteri, A. |editor3=Ortiz, D. A. |name-list-style=amp |work=Anfibios del Ecuador. Version 2022.0 |publisher=Museo de Zoología, Pontificia Universidad Católica del Ecuador (QCAZ) |access-date=3 November 2023}}</ref>
<ref name="Beolens et al. 2013">{{cite book |last1 = Beolens | first1 = Bo | last2 = Watkins | first2 = Michael | last3 = Grayson | first3 = Michael |name-list-style=amp |title=The Eponym Dictionary of Amphibians |url=https://play.google.com/books/reader?id=QJY3BAAAQBAJ&pg=GBS.PA130 |date=2013 |publisher=Pelagic Publishing |isbn=978-1-907807-42-8 |page=130}}</ref>
<ref name="Cannatella 1981">{{cite journal |last1=Cannatella |first1=David C. |title=A new ''Atelopus'' from Ecuador and Colombia |journal=Journal of Herpetology |date=1981 |volume=15 |issue=2 |pages=133–138 |doi=10.2307/1563371 |jstor=1563371 }}</ref>
<ref name=Frost>{{cite web |url=https://amphibiansoftheworld.amnh.org/Amphibia/Anura/Bufonidae/Atelopus/Atelopus-lynchi |title=''Atelopus lynchi'' Cannatella, 1981 |author=Frost, Darrel R. |year=2023 |work=Amphibian Species of the World: an Online Reference. Version 6.2 |publisher=American Museum of Natural History |doi=10.5531/db.vz.0001 |access-date=3 November 2023}}</ref>
<ref name=iNaturalist>{{cite web |url=https://uk.inaturalist.org/taxa/21710-Atelopus-lynchi |title=Lynch's Harlequin Frog (''Atelopus lynchi'') |work=iNaturalist |access-date=3 November 2023}}</ref>
<ref name=LAC>{{cite web |url=https://www.batrachia.com/orden-anura/bufonidae-85-spp/atelopus-lynchi/ |title=''Atelopus lynchi'' Cannatella, 1981 |author=Acosta Galvis, A. R. |year=2023 |work=Lista de los Anfibios de Colombia: Referencia en linea V13.2023 |access-date=3 November 2023}}</ref>
<ref name="Ranas Arlequines">{{cite book |chapter=''Atelopus lynchi'' Cannatella, 1981 |title=Ranas Arlequines |last1=Sánchez-Pacheco |first1=Santiago J. |editor=Rueda-Almonacid, J.V. |display-editors=etal |year=2005 |publisher=Conservación Internacional |series=Libretas de Campo |isbn=958-97690-4-7 |page=85 |url=https://www.researchgate.net/publication/259363493 }}</ref> }}
{{Taxonbar|from=Q2236336}}
lynchi Category:Amphibians of the Andes Category:Amphibians of Colombia Category:Amphibians of Ecuador Category:Amphibians described in 1981 Category:Taxa named by David C. Cannatella Category:Taxonomy articles created by Polbot