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Alcalus mariae

Conservation status
Endangered (IUCN 3.1)^[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Amphibia
Order:	Anura
Family:	Ceratobatrachidae
Genus:	Alcalus
Species:	A. mariae
Binomial name
*Alcalus mariae* (Inger, 1954)
Synonyms
Micrixalus mariae Inger, 1954^[2] Ingerana mariae (Inger, 1954)

Alcalus mariae, common name Mary's frog^[3] or Palawan eastern frog,^[1]^[4] is a species of frog in the family Ceratobatrachidae. It is endemic to the Palawan Island, the Philippines, and only known from its type locality, Mount Balabag,^[4] in the Mantalingajan mountain range.^[1] The specific name refers to Mary Lee Inger née Ballew, first wife of Robert F. Inger who formally described the species in 1954.^[2]^[3]

Description

The type series of Alcalus mariae consists of two males measuring 32 and 33 mm (1.3 and 1.3 in) in snout–vent length. They are stocky frogs with depressed, broad head and rounded snout. Tympanum is visible though rim hidden by skin. Tips of digits are expanded into large, round disks. Legs are stout and relatively short. Toes are webbed and have disks similar in size to those on fingers. Skin of all dorsal surfaces is coarsely shagreen. Chest and belly are strongly rugose but gular region is less so. Tubercles are present laterally.^[2]

Habitat and conservation

The natural habitat of Alcalus mariae is lower montane forest where it occurs in the forest floor leaf-litter. Habitat loss is the most important threat to this species, although the area of type locality is generally well protected.^[1] The frog is the most evolutionarily distinct and globally endangered species in the Philippines, as listed by the Zoological Society of London in their EDGE species analysis, where it ranked 75th out of the thousands of amphibian species known to humanity.^[5]

References

Wikimedia Commons has media related to Alcalus mariae.

^ ^a ^b ^c ^d IUCN SSC Amphibian Specialist Group (2020). "Alcalus mariae". IUCN Red List of Threatened Species. 2020: e.T41226A175776871. doi:10.2305/IUCN.UK.2020-2.RLTS.T41226A175776871.en. Retrieved 15 November 2021.
^ ^a ^b ^c Inger, Robert F. (1954). "Systematics and zoogeography of Philippine amphibia". Fieldiana: Zoology. 33 (4): 183–531.
^ ^a ^b Beolens, Bo; Watkins, Michael; Grayson, Michael (2013). The Eponym Dictionary of Amphibians. Pelagic Publishing. p. 137. ISBN 978-1-907807-44-2.
^ ^a ^b Frost, Darrel R. (2015). "Alcalus mariae (Inger, 1954)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 1 August 2015.
^ "Palawan Eastern Frog".

Taxon identifiers
Alcalus mariae	Wikidata: Q28053379 Wikispecies: Alcalus mariae ADW: Ingerana_mariae AmphibiaWeb: 4734 ASW: Alcalus-mariae CoL: BH3C GBIF: 10714666 iNaturalist: 476470 ITIS: 1095657 IUCN: 41226 NCBI: 1597992 Observation.org: 955516 Open Tree of Life: 3618177
Micrixalus mariae	Wikidata: Q28053380 CoL: 42RGY GBIF: 9167110 ITIS: 1095658 Open Tree of Life: 3618177

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