Mertensophryne usambarae
Mertensophryne usambarae in Tanga, Tanzania
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Bufonidae
Genus: Mertensophryne
Species:
M. usambarae
Binomial name
Mertensophryne usambarae
(Poynton and Clarke, 1999)[2]
Synonyms

Stephopaedes usambarae Poynton and Clarke, 1999[3]

Mertensophryne usambarae (common name: Usambara forest toad) is a critically endangered species of toad in the family Bufonidae. It is endemic to the foothills of the East Usambara Mountains, northeastern Tanzania.[1][2][4][5]

Description

Males measure up to 35 mm (1.4 in) and females up to 45 mm (1.8 in) in snout–vent length. The dorsum is brown with some weak marking; the ventral surface is immaculate or with some mottling. The parotoid glands are flattened. There is no tympanum. The legs are relatively short and densely covered with conical warts.[3][4][5]

Habitat and conservation

Mertensophryne usambarae is a terrestrial species that inhabits lowland forests not higher than 410 m (1,350 ft) above sea level. It can also persist in mildly disturbed, selectively logged forests. Its breeding biology is unknown, but some other Mertensophryne species breed in puddles among tree roots (e.g., Mertensophryne anotis[3]), and this could apply to this species too.[1] Mertensophryne usambarae is ecologically similar to Mertensophryne micranotis, and these two species can co-occur.[4][5]

The species is only known from three sites that are close to each other. It appears to be uncommon; i.e., three days of intensive survey effort in 2012 only revealed two specimens. It is threatened by habitat loss caused by agricultural encroachment, wood extraction, and human settlement. The known sites are all forest reserves (Kwamgumi, Segoma and Mtai Forest Reserves), but they are not well protected. Because of the very small range and threats to the habitat, the International Union for Conservation of Nature (IUCN) assessed this species as "Critically Endangered" in 2016.[1]

References

  1. 1 2 3 4 IUCN SSC Amphibian Specialist Group (2016). "Mertensophryne usambarae". IUCN Red List of Threatened Species. 2016: e.T54890A84397352. doi:10.2305/IUCN.UK.2016-1.RLTS.T54890A84397352.en. Retrieved 16 November 2021.
  2. 1 2 Frost, Darrel R. (2016). "Mertensophryne usambarae (Poynton and Clarke, 1999)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 20 October 2016.
  3. 1 2 3 Poynton, J. C.; Clarke, B. T. (1999). "Two new species of Stephopaedes (Anura: Bufonidae) from Tanzania, with a review of the genus". African Journal of Herpetology. 48 (1–2): 1–14. doi:10.1080/21564574.1999.9651065.
  4. 1 2 3 "Mertensophryne usambarae". AmphibiaWeb: Information on amphibian biology and conservation. [web application]. Berkeley, California: AmphibiaWeb. 2016. Retrieved 20 October 2016.
  5. 1 2 3 Breda Zimkus (2014). "Mertensophryne usambarae (Poynton and Clarke, 1999)". African Amphibians. Retrieved 20 October 2016.
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