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Prosymna visseri FITZSIMONS, 1959

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Higher TaxaProsymnidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Visser’s Shovel-snout 
SynonymProsymna visseri FITZSIMONS 1959
Prosymna visseri — BAUER et al. 1993
Prosymna visseri — WALLACH et al. 2014: 582
Prosymna visseri — LOBÓN-ROVIRA et al. 2022 
DistributionS Angola, N Namibia

Type locality: near Caracul, S. Angola.  
Reproductionoviparous 
TypesHolotype: DNMNH (= TM) 24531, adult male 
DiagnosisDIAGNOSIS: Falling in the group of species with a single, undivided internasal, but clearly distinguished by the very large prefrontal, whIch is swollen on eIther side and extends downwards to make contact with first upper labial and separate loreal from nasal; snout obtuse, rostral small with horizontal edge rounded; high ventral and subcaudal counts [from FITZSIMONS 1959: 408]. 
Comment 
EtymologyNamed after G. Visser, a South African from Cape Town who led and sponsored the expedition that collected this species. 
References
  • Baptista NL, António T, Branch WR. 2019. The herpetofauna of Bicuar National Park and surroundings, southwestern Angola: a preliminary checklist. Amphibian & Reptile Conservation 13(2) [Special Section]: 96–130 (e203) - get paper here
  • Bauer, Aaron M.; Branch, William R. & Haacke, Wulf D. 1993. The herpetofauna of the Kamanjab area and adjacent Damaraland, Namibia. Madoqua (Windhoek) 18 (2): 117-145. - get paper here
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Broadley, D.G. 1980. A Revision of the African snake genus Prosymna Gray (Colubridae). Occ.Pap.natl.Mus.Rhod. 6 (7): 481-556
  • Broadley, D.G. 1980. A revision of the African snake genus Prosymna Gray. Bull. Mus. natl. Hist. nat., Paris 22: 362-382
  • FitzSimons, V. 1959. Some new reptiles from southern Africa and southern Angola. Annals Transvaal Mus. 23: 405-409 - get paper here
  • Herrmann, H.-W.; W.R. Branch 2013. Fifty years of herpetological research in the Namib Desert and Namibia with an updated and annotated species checklist. Journal of Arid Environments 93: 94–115 - get paper here
  • Lobón-Rovira J, Vaz Pinto P, S. Becker F, Tolley KA, Measey J, Bennet B, Boon B, de Sá S, Conradie W 2022. An updated herpetofaunal species inventory of Iona National Park in southwestern Angola. Check List 18(2): 289-321 - get paper here
  • Marques, Mariana P.; Luis M. P. Ceríaco , David C. Blackburn , and Aaron M. Bauer 2018. Diversity and Distribution of the Amphibians and Terrestrial Reptiles of Angola -- Atlas of Historical and Bibliographic Records (1840–2017). Proc. Cal. Acad. Sci. (Ser. 4) 65: 1-501 (Supplement II)
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
 
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