| 词条 | Black file snake |
| 释义 |
| image = Gonionotophis nyassae.jpg | status = LC | status_system = IUCN3.1 | status_ref = [1] | genus = Gracililima | parent_authority = Broadley, Tolley, Conradie, Wishart, J.-F. Trape, Burger, Kusamba, Zassi-Boulou & Greenbaum, 2018 | species = nyassae | authority = (Günther, 1888) | synonyms = *Simocephalus nyassae {{small|Günther, 1888}}
| synonyms_ref =[2] }} The black file snake (Gracililima nyassae), also known commonly as the dwarf file snake or the Nyassa file snake, is a species of snake in the subfamily Lamprophiinae of the family Lamprophiidae.[2] The species is endemic to Africa. TaxonomyGracililima nyassae is the only species in the genus Gracililima. The species was previously placed in the genera Gonionotophis, Mehelya, and Simocephalus. EtymologyThe generic name, Gracililima is from Latin gracili- meaning "slender" + lima meaning "file".[2] The specific name, nyassae, refers to the type locality, "Lake Nyassa" (= Lake Malawi).[3] Geographic rangeG. nyassae is found in Botswana, Burundi, Democratic Republic of the Congo, Kenya, Malawi, Mozambique, Namibia, Rwanda, Somalia, South Africa, Swaziland, Tanzania, Zambia, and Zimbabwe.[2]DescriptionG. nyassae is a small snake. The female may attain a snout-to-vent length (SVL) of {{convert|52|cm|in|abbr=on}}. The male is shorter, around {{convert|44|cm|in|abbr=on}} SVL. Dorsally it is dark brown or purplish brown, with pink skin showing between the scales. Unlike the Common File snake, this snake lacks the light dorsal stripe but has the characteristic triangular body [4] , Ventrally it is black to dark olive (uniform phase), or cream-olive to white (bicolored phase).[2][5]DietG. nyassae preys on skinks and other lizards.[5]ReproductionThe black file snake is oviparous. The female may lay as many as six eggs.[5] References1. ^Spawls S (2018). "Gracililima nyassae " (amended version of 2010 assessment). The IUCN Red List of Threatened Species 2018: e.T176862A128729307. https://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T176862A128729307.en. International Union for Conservation of Nature and Natural Resources. Downloaded on 20 December 2018. 2. ^1 2 3 4 {{EMBL species|genus=Gracililima|species=nyassae}}. www.reptile-database.org. 3. ^Günther (1888). 4. ^{{cite web |title=black file snake |url=https://www.africansnakebiteinstitute.com/snake/black-file-snake/ |website=africansnakebiteinstitute}} 5. ^1 2 Branch, Bill (2004). Field Guide to Snakes and other Reptiles of Southern Africa. Third Revised edition, Second Impression. Sanibel Island, Florida: Ralph Curtis Books. 399 pp. {{ISBN|0-88359-042-5}}. (Mehelya nyassae, p. 79 + Plate 36). Further reading
3 : Colubrids|Reptiles of South Africa|Reptiles described in 1888 |
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