{{Short description|Genus of amphibians}} {{automatic taxobox | image = Ingerana_tasanae.jpg | image_caption = ''Alcalus tasanae'' from Thailand | taxon = Alcalus | authority = Brown, Siler, Richards, Diesmos, and Cannatella, 2015<ref name=BrownEtAl2015/> | parent_authority = Brown, Siler, {{interlanguage link|Stephen J. Richards|fr|lt=Richards}}, Diesmos, and Cannatella, 2015<ref name=BrownEtAl2015/> | type_species = ''Micrixalus mariae'' | type_species_authority = Inger, 1954 | subdivision_ranks = Species | subdivision = 5 species (see text) }}
'''''Alcalus''''' is a small genus of frogs in the family Ceratobatrachidae.<ref name=Frost/><ref name=AmphibiaWeb/> It is the only member of the subfamily '''Alcalinae'''. Its sister taxon is Ceratobatrachinae.<ref name="Frost Alcalinae"/> Common name '''Alcala's dwarf mountain frogs''' has been proposed for the genus. They are found in Palawan Island (the Philippines), Borneo, and the Malay Peninsula.<ref name=Frost/> They prefer semi-aquatic microhabitats.<ref name=BrownEtAl2015/>
==Etymology== The genus is named in honour of Angel Alcala, a Filipino biologist who has worked with Southeast Asian amphibians.<ref name=BrownEtAl2015/>
==Description== Compared to the closely related genera ''Cornufer'' and ''Platymantis'', ''Alcalus'' have an intermediate body size (based on ''Alcalus baluensis'' and ''A. mariae'', males measure {{convert|20|-|37|mm|abbr=on}} and females {{convert|26|-|43|mm|abbr=on}} in snout–vent length). The head is broad. Skin is coarsely textured, shagreened, or ‘wrinkled’ in appearance. The toe discs are widely expanded; inter-digital webbing is extensive. Males have nuptial pads but lack vocal sacs.<ref name=BrownEtAl2015/>
==Species== There are five species:<ref name=Frost/><ref name=AmphibiaWeb/> * ''Alcalus baluensis'' <small>(Boulenger, 1896)</small> * ''Alcalus mariae'' <small>(Inger, 1954)</small> * ''Alcalus rajae'' <small>(Iskandar, Bickford, and Arifin, 2011)</small> * ''Alcalus sariba'' <small>(Shelford, 1905)</small> * ''Alcalus tasanae'' <small>(Smith, 1921)</small>
==References== {{Reflist|30em|refs= <ref name=AmphibiaWeb>{{cite web |url=http://amphibiaweb.org/lists/Ceratobatrachidae.shtml |title=Ceratobatrachidae |year=2020 |work=AmphibiaWeb: Information on amphibian biology and conservation. [web application] |publisher=Berkeley, California: AmphibiaWeb |accessdate=21 June 2020}}</ref>
<ref name=BrownEtAl2015>{{cite journal |last1=Brown |first1=Rafe M. |last2=Siler |first2=Cameron D. |last3=Richards |first3=Stephen J. |last4=Diesmos |first4=Arvin C. |last5=Cannatella |first5=David C. |name-list-style=amp |title=Multilocus phylogeny and a new classification for Southeast Asian and Melanesian forest frogs (family Ceratobatrachidae) |journal=Zoological Journal of the Linnean Society |volume=174 |issue=1 |year=2015 |pages=130–168 |doi=10.1111/zoj.12232 |doi-access=free }}</ref>
<ref name=Frost>{{cite web |url=https://amphibiansoftheworld.amnh.org/Amphibia/Anura/Ceratobatrachidae/Alcalinae/Alcalus |title=''Alcalus'' Brown, Siler, Richards, Diesmos, and Cannatella, 2015 |author=Frost, Darrel R. |year=2020 |work=Amphibian Species of the World: An Online Reference. Version 6.1 |publisher=American Museum of Natural History |doi=10.5531/db.vz.0001 |accessdate=21 June 2020}}</ref>
<ref name="Frost Alcalinae">{{cite web |url=https://amphibiansoftheworld.amnh.org/Amphibia/Anura/Ceratobatrachidae/Alcalinae |title=Alcalinae Brown, Siler, Richards, Diesmos, and Cannatella, 2015 |author=Frost, Darrel R. |year=2020 |work=Amphibian Species of the World: An Online Reference. Version 6.1 |publisher=American Museum of Natural History |doi=10.5531/db.vz.0001 |accessdate=21 June 2020}}</ref> }}
{{Taxonbar|from=Q19901049}}
Category:Alcalus Category:Ceratobatrachidae Category:Amphibian genera Category:Amphibians of Asia Category:Taxa named by Rafe M. Brown Category:Taxa named by David C. Cannatella Category:Taxa named by Arvin Cantor Diesmos Category:Taxa named by Stephen J. Richards