| 释义 |
- Etymology
- Description
- Habitat and conservation
- References
{{speciesbox
| image =
| status = EN
| status_system = IUCN3.1
| status_ref = [1]
| taxon = Arthroleptis tanneri
| authority = Grandison, 1983[2]
| synonyms =
}}Arthroleptis tanneri, the Tanzania screeching frog or Tanner's squeaker, is a species of frog in the family Arthroleptidae. It is endemic to the West Usambara Mountains in northeastern Tanzania; previous records from elsewhere refer to other species.[1][4]EtymologyThe specific name tanneri honours Mr John Tanner, owner of a tea estate in Mazumbai,[5] (the type locality) "in recognition of the generosity and hospitality afforded the collectors and other zoologists and his keen interest in the natural history of Mazumbai."[2] DescriptionMales in the type series measure on average {{convert|34|mm|abbr=on}} and females {{convert|51|mm|abbr=on}} in snout–vent length.[2] With a maximum snout-vent length of {{convert|55|mm|abbr=on}}, it is the largest of the Arthroleptis species.[ The body is stoutly built. The head is slightly broader than long, with snout rounded in dorsal view. The canthus rostralis is sharp. The tympanum is clearly visible. The toes are long, slender, and without webbing. The skin is usually smooth, although a juvenile had small scattered dorsal warts. The dorsum is claret-brown, with the chain of darker vertebral markings. The hands and feet are pinkish, especially from under. The upper half of iris is pale gold.[2]] Arthroleptis tanneri resembles Arthroleptis affinis in colouration and morphology,[2] but molecular data suggest that they are not closely related.Habitat and conservationThe natural habitats of Arthroleptis tanneri are montane forests at elevations of {{convert|1400|–|2000|m|abbr=on}} above sea level. It is in a leaf-litter species that has not been recorded outside good-quality forest.[1] It is presumed to have direct development (i.e., no free-living tadpole stage), like all the other Arthroleptis species.[1] Population trends of this species are unknown but it is believed to be in decline because of habitat loss and deterioration, which are caused by expanding agriculture, wood extraction, and human settlements. The species occurs in the Mazumbai, Baga II, Shume-Magamba Forest Reserves, although all these would need further protection. In 2015 the International Union for Conservation of Nature (IUCN) assessed it as "Endangered" because of its small distribution area and the ongoing habitat loss and deterioration.[1] References1. ^1 2 3 4 {{cite journal | author = IUCN SSC Amphibian Specialist Group | title = Arthroleptis tanneri | journal = IUCN Red List of Threatened Species | volume= 2015 | page = e.T54388A16934674 | year = 2015 | doi = 10.2305/IUCN.UK.2015-2.RLTS.T54388A16934674.en }}
2. ^1 {{cite book|author1=Bo Beolens|author2=Michael Watkins|author3=Michael Grayson|title=The Eponym Dictionary of Amphibians|url=https://books.google.com/books?id=QJY3BAAAQBAJ&pg=PA211|date=22 April 2013|publisher=Pelagic Publishing|isbn=978-1-907807-44-2|pages=211}}
3. ^1 {{cite web |url=http://research.amnh.org/vz/herpetology/amphibia/Amphibia/Anura/Arthroleptidae/Arthroleptinae/Arthroleptis/Arthroleptis-tanneri |title=Arthroleptis tanneri Grandison, 1983 |author=Frost, Darrel R. |year=2016 |work=Amphibian Species of the World: an Online Reference. Version 6.0 |publisher=American Museum of Natural History |accessdate=16 October 2016}}
4. ^1 2 3 4 5 {{cite journal |last1=Grandison |first1=A. G. C. |year=1983 |title=A new species of Arthroleptis (Anura: Ranidae) from the West Usambara Mountains, Tanzania |journal=Bulletin of the British Museum (Natural History) |volume=45 |pages=77–84 |url=https://www.biodiversitylibrary.org/part/27996}}
[The maximum length is listed in the Appendix 1.]
}}{{Taxonbar|from=Q1941926}} 5 : Arthroleptis|Amphibians of Tanzania|Endemic fauna of Tanzania|Amphibians described in 1983|Taxonomy articles created by Polbot |